diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-add.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-add.tt
index 713b3b198a..18f8962ee7 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-add.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-add.tt
@@ -256,24 +256,24 @@ function testPredictionPattern() {
     var error = 0;
     var error_msg = "";
     if(frequencyid == undefined || frequencyid == ""){
-        error_msg += _("- Frequency is not defined\n");
+        error_msg += _("- Frequency is not defined") + "\n";
         error ++;
     }
     acquidate = $("#acqui_date").val();
     if(acquidate == undefined || acquidate == ""){
-        error_msg += _("- First publication date is not defined\n");
+        error_msg += _("- First publication date is not defined") + "\n";
         error ++;
     }
     [% IF (more_than_one_serial) %]
       var nextacquidate = $("#nextacquidate").val();
       if(nextacquidate == undefined || nextacquidate == ""){
-        error_msg += _("- Next issue publication date is not defined\n");
+        error_msg += _("- Next issue publication date is not defined") + "\n";
         error ++;
       }
     [% END %]
 
     if(error){
-        alert(_("Cannot test prediction pattern for the following reason(s):\n\n")
+        alert(_("Cannot test prediction pattern for the following reason(s):") + "\n\n"
             + error_msg);
         return false;
     }
diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-numberpatterns.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-numberpatterns.tt
index 686cdc8fe1..953882fe0e 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-numberpatterns.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-numberpatterns.tt
@@ -11,16 +11,16 @@
       var error = 0;
       var error_msg = "";
       if(frequencyid == undefined || frequencyid == "") {
-          error_msg += _("- Frequency is not defined\n");
+          error_msg += _("- Frequency is not defined") + "\n";
           error ++;
       }
       if(firstacquidate == undefined || firstacquidate == "") {
-          error_msg += _("- First publication date is not defined\n");
+          error_msg += _("- First publication date is not defined") + "\n";
           error ++;
       }
 
       if(error){
-          alert(_("Cannot test prediction pattern for the following reason(s):\n\n")
+          alert(_("Cannot test prediction pattern for the following reason(s):") + "\n\n"
               + error_msg);
           return false;
       }