diff --git a/basket/sendbasket.pl b/basket/sendbasket.pl
index faeebf4d7f..ab29824a64 100755
--- a/basket/sendbasket.pl
+++ b/basket/sendbasket.pl
@@ -52,7 +52,7 @@ my $dbh          = C4::Context->dbh;
 
 if ( $email_add ) {
     die "Wrong CSRF token" unless Koha::Token->new->check_csrf({
-        id     => C4::Context->userenv->{id},
+        id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
         secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
         token  => scalar $query->param('csrf_token'),
     });
@@ -177,7 +177,7 @@ else {
         suggestion     => C4::Context->preference("suggestion"),
         virtualshelves => C4::Context->preference("virtualshelves"),
         csrf_token     => Koha::Token->new->generate_csrf(
-            {   id     => C4::Context->userenv->{id},
+            {   id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
                 secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
             }
         ),
diff --git a/members/deletemem.pl b/members/deletemem.pl
index 15d1b2959f..9ab49fb9d5 100755
--- a/members/deletemem.pl
+++ b/members/deletemem.pl
@@ -148,7 +148,7 @@ if ( $op eq 'delete_confirm' or $countissues > 0 or $flags->{'CHARGES'}  or $is_
         $template->param(
             op         => 'delete_confirm',
             csrf_token => Koha::Token->new->generate_csrf(
-                {   id     => C4::Context->userenv->{id},
+                {   id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
                     secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
                 }
             ),
@@ -158,7 +158,7 @@ if ( $op eq 'delete_confirm' or $countissues > 0 or $flags->{'CHARGES'}  or $is_
 
     die "Wrong CSRF token"
         unless Koha::Token->new->check_csrf({
-            id     => C4::Context->userenv->{id},
+            id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
             secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
             token  => scalar $input->param('csrf_token'),
         });
diff --git a/members/member-password.pl b/members/member-password.pl
index 82cd642b9a..1008cb60b6 100755
--- a/members/member-password.pl
+++ b/members/member-password.pl
@@ -69,7 +69,7 @@ if ( $newpassword && !scalar(@errors) ) {
 
     die "Wrong CSRF token"
         unless Koha::Token->new->check_csrf({
-            id     => C4::Context->userenv->{id},
+            id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
             secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
             token  => scalar $input->param('csrf_token'),
         });
@@ -151,7 +151,7 @@ $template->param(
     minPasswordLength          => $minpw,
     RoutingSerials             => C4::Context->preference('RoutingSerials'),
     csrf_token                 => Koha::Token->new->generate_csrf({
-        id     => C4::Context->userenv->{id},
+        id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
         secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
     }),
 );
diff --git a/members/memberentry.pl b/members/memberentry.pl
index b9082e815e..2fcaa723ff 100755
--- a/members/memberentry.pl
+++ b/members/memberentry.pl
@@ -290,7 +290,7 @@ if ($op eq 'save' || $op eq 'insert'){
 
     die "Wrong CSRF token"
         unless Koha::Token->new->check_csrf({
-            id     => C4::Context->userenv->{id},
+            id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
             secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
             token  => scalar $input->param('csrf_token'),
         });
@@ -753,7 +753,7 @@ $template->param(
 # Generate CSRF token
 $template->param(
     csrf_token => Koha::Token->new->generate_csrf(
-        {   id     => C4::Context->userenv->{id},
+        {   id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
             secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
         }
     ),
diff --git a/members/moremember.pl b/members/moremember.pl
index d637d1bcc5..55b09014e6 100755
--- a/members/moremember.pl
+++ b/members/moremember.pl
@@ -273,7 +273,7 @@ $template->param( picture => 1 ) if $patron_image;
 # Generate CSRF token for upload and delete image buttons
 $template->param(
     csrf_token => Koha::Token->new->generate_csrf({
-        id     => C4::Context->userenv->{id},
+        id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
         secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
     }),
 );
diff --git a/opac/opac-memberentry.pl b/opac/opac-memberentry.pl
index 59306bc550..c1610a17db 100755
--- a/opac/opac-memberentry.pl
+++ b/opac/opac-memberentry.pl
@@ -200,7 +200,7 @@ elsif ( $action eq 'update' ) {
     my $borrower = GetMember( borrowernumber => $borrowernumber );
     die "Wrong CSRF token"
         unless Koha::Token->new->check_csrf({
-            id     => $borrower->{userid},
+            id     => Encode::encode( 'UTF-8', $borrower->{userid} ),
             secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
             token  => scalar $cgi->param('csrf_token'),
         });
@@ -221,7 +221,7 @@ elsif ( $action eq 'update' ) {
             invalid_form_fields    => $invalidformfields,
             borrower               => \%borrower,
             csrf_token             => Koha::Token->new->generate_csrf({
-                id     => $borrower->{userid},
+                id     => Encode::encode( 'UTF-8', $borrower->{userid} ),
                 secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
             }),
         );
@@ -262,7 +262,7 @@ elsif ( $action eq 'update' ) {
                 nochanges => 1,
                 borrower => GetMember( borrowernumber => $borrowernumber ),
                 csrf_token => Koha::Token->new->generate_csrf({
-                    id     => $borrower->{userid},
+                    id     => Encode::encode( 'UTF-8', $borrower->{userid} ),
                     secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
                 }),
             );
@@ -285,7 +285,7 @@ elsif ( $action eq 'edit' ) {    #Display logged in borrower's data
         guarantor => scalar Koha::Patrons->find($borrowernumber)->guarantor(),
         hidden => GetHiddenFields( $mandatory, 'modification' ),
         csrf_token => Koha::Token->new->generate_csrf({
-            id     => $borrower->{userid},
+            id     => Encode::encode( 'UTF-8', $borrower->{userid} ),
             secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
         }),
     );
diff --git a/opac/opac-sendbasket.pl b/opac/opac-sendbasket.pl
index 25b6eac907..c8c5e48c74 100755
--- a/opac/opac-sendbasket.pl
+++ b/opac/opac-sendbasket.pl
@@ -54,7 +54,7 @@ my $dbh          = C4::Context->dbh;
 
 if ( $email_add ) {
     die "Wrong CSRF token" unless Koha::Token->new->check_csrf({
-        id     => C4::Context->userenv->{id},
+        id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
         secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
         token  => scalar $query->param('csrf_token'),
     });
@@ -197,7 +197,7 @@ else {
         suggestion     => C4::Context->preference("suggestion"),
         virtualshelves => C4::Context->preference("virtualshelves"),
         csrf_token     => Koha::Token->new->generate_csrf(
-            {   id     => C4::Context->userenv->{id},
+            {   id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
                 secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
             }
         ),
diff --git a/tools/import_borrowers.pl b/tools/import_borrowers.pl
index f22f2efe22..daf7d590f5 100755
--- a/tools/import_borrowers.pl
+++ b/tools/import_borrowers.pl
@@ -112,7 +112,7 @@ $template->param( SCRIPT_NAME => '/cgi-bin/koha/tools/import_borrowers.pl' );
 if ( $uploadborrowers && length($uploadborrowers) > 0 ) {
     die "Wrong CSRF token"
         unless Koha::Token->new->check_csrf({
-            id     => C4::Context->userenv->{id},
+            id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
             secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
             token  => scalar $input->param('csrf_token'),
         });
@@ -391,7 +391,7 @@ if ( $uploadborrowers && length($uploadborrowers) > 0 ) {
 
     $template->param(
         csrf_token => Koha::Token->new->generate_csrf(
-            {   id     => C4::Context->userenv->{id},
+            {   id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
                 secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
             }
         ),
diff --git a/tools/picture-upload.pl b/tools/picture-upload.pl
index 87cac77db5..a3b549e503 100755
--- a/tools/picture-upload.pl
+++ b/tools/picture-upload.pl
@@ -88,7 +88,7 @@ if ( ( $op eq 'Upload' ) && $uploadfile ) {
 
     die "Wrong CSRF token"
         unless Koha::Token->new->check_csrf({
-            id     => C4::Context->userenv->{id},
+            id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
             secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
             token  => scalar $input->param('csrf_token'),
         });
@@ -176,7 +176,7 @@ elsif ( ( $op eq 'Upload' ) && !$uploadfile ) {
 elsif ( $op eq 'Delete' ) {
     die "Wrong CSRF token"
         unless Koha::Token->new->check_csrf({
-            id     => C4::Context->userenv->{id},
+            id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
             secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
             token  => scalar $input->param('csrf_token'),
         });
@@ -195,7 +195,7 @@ if ( $borrowernumber && !%errors && !$template->param('ERRORS') ) {
 else {
     $template->param(
         csrf_token => Koha::Token->new->generate_csrf({
-            id     => C4::Context->userenv->{id},
+            id     => Encode::encode( 'UTF-8', C4::Context->userenv->{id} ),
             secret => md5_base64( Encode::encode( 'UTF-8', C4::Context->config('pass') ) ),
         }),
     );