diff --git a/js/tbl_change.js b/js/tbl_change.js
index 79e790694..234e4e197 100644
--- a/js/tbl_change.js
+++ b/js/tbl_change.js
@@ -26,10 +26,9 @@ function nullify(theType, urlField, md5Field, multi_edit)
         rowForm.elements['funcs' + multi_edit + '[' + md5Field + ']'].selectedIndex = -1;
     }
 
-    // "SET" field , "ENUM" field with more than 20 characters
-    // or foreign key field (drop-down)
-    if (theType == 1 || theType == 3 || theType == 4) {
-        rowForm.elements['fields' + multi_edit + '[' + md5Field +  ']'].selectedIndex = -1;
+    // "ENUM" field with more than 20 characters
+    if (theType == 1) {
+        rowForm.elements['fields' + multi_edit + '[' + md5Field +  ']'][1].selectedIndex = -1;
     }
     // Other "ENUM" field
     else if (theType == 2) {
@@ -45,6 +44,14 @@ function nullify(theType, urlField, md5Field, multi_edit)
 
         } // end if
     }
+    // "SET" field
+    else if (theType == 3) {
+        rowForm.elements['fields' + multi_edit + '[' + md5Field +  '][]'].selectedIndex = -1;
+    }
+    // Foreign key field (drop-down)
+    else if (theType == 4) {
+        rowForm.elements['fields' + multi_edit + '[' + md5Field +  ']'].selectedIndex = -1;
+    }
     // foreign key field (with browsing icon for foreign values)
     else if (theType == 6) {
         rowForm.elements['fields' + multi_edit + '[' + md5Field + ']'].value = '';