diff --git a/t/Context.t b/t/Context.t
index 98203a2571..501af1b3b4 100755
--- a/t/Context.t
+++ b/t/Context.t
@@ -2,7 +2,7 @@
 
 use Modern::Perl;
 use DBI;
-use Test::More tests => 8;
+use Test::More tests => 10;
 use Test::MockModule;
 
 BEGIN {
@@ -34,4 +34,9 @@ is ( $is_super_librarian, 1, "With flag=1, it is a super librarian" );
 $userenv->{flags} = undef;
 $is_super_librarian = eval{ C4::Context::IsSuperLibrarian() };
 is ( $@, q||, "IsSuperLibrarian does not log an error if \$userenv->{flags} is undefined" );
+is ( $is_super_librarian, 0, "With flag=undef, it is not a super librarian" );
+
+$userenv->{flags} = 0;
+$is_super_librarian = eval{ C4::Context::IsSuperLibrarian() };
+is ( $@, q||, "IsSuperLibrarian does not log an error if \$userenv->{flags} is equal to 0" );
 is ( $is_super_librarian, 0, "With flag=0, it is not a super librarian" );