diff --git a/lang/en/condition.php b/lang/en/condition.php
index 5851e6e1f61..a888d8c7747 100644
--- a/lang/en/condition.php
+++ b/lang/en/condition.php
@@ -47,7 +47,10 @@ $string['completion_fail'] = 'must be complete with fail grade';
 $string['completion_incomplete'] = 'must not be marked complete';
 $string['completion_pass'] = 'must be complete with pass grade';
 $string['configenableavailability'] = 'When enabled, this lets you set conditions (based on date, grade, or completion) that control whether an activity or resource can be accessed.';
+$string['contains'] = 'contains';
+$string['doesnotcontain'] = 'doesn\'t contain';
 $string['enableavailability'] = 'Enable conditional access';
+$string['endswith'] = 'ends with';
 $string['fielddeclaredmultipletimes'] = 'You can not declare the same field more than once per activity.';
 $string['grade_atleast'] = 'must be at least';
 $string['gradecondition'] = 'Grade condition';
@@ -62,6 +65,9 @@ $string['grade_upto'] = 'and less than';
 $string['gradeitembutnolimits'] = 'You must enter an upper or lower limit, or both.';
 $string['gradelimitsbutnoitem'] = 'You must choose a grade item.';
 $string['gradesmustbenumeric'] = 'The minimum and maximum grades must be numeric (or blank).';
+$string['isempty'] = 'is empty';
+$string['isequalto'] = 'is equal to';
+$string['isnotempty'] = 'is not empty';
 $string['none'] = '(none)';
 $string['notavailableyet'] = 'Not available yet';
 $string['requires_completion_0'] = 'Not available unless the activity <strong>{$a}</strong> is incomplete.';
@@ -76,13 +82,20 @@ $string['requires_grade_any'] = 'Not available until you have a grade in <strong
 $string['requires_grade_max'] = 'Not available unless you get an appropriate score in <strong>{$a}</strong>.';
 $string['requires_grade_min'] = 'Not available until you achieve a required score in <strong>{$a}</strong>.';
 $string['requires_grade_range'] = 'Not available unless you get a particular score in <strong>{$a}</strong>.';
-$string['requires_user_field_restriction'] = 'Not available unless your <strong>{$a->field}</strong> {$a->operator} <strong>{$a->value}</strong>.';
+$string['requires_user_field_contains'] = 'Not available unless your <strong>{$a->field}</strong> contains <strong>{$a->value}</strong>.';
+$string['requires_user_field_doesnotcontain'] = 'Not available if your <strong>{$a->field}</strong> contains <strong>{$a->value}</strong>.';
+$string['requires_user_field_endswith'] = 'Not available unless your <strong>{$a->field}</strong> ends with <strong>{$a->value}</strong>.';
+$string['requires_user_field_isempty'] = 'Not available unless your <strong>{$a->field}</strong> is empty.';
+$string['requires_user_field_isequalto'] = 'Not available unless your <strong>{$a->field}</strong> is equal to <strong>{$a->value}</strong>.';
+$string['requires_user_field_isnotempty'] = 'Not available if your <strong>{$a->field}</strong> is empty.';
+$string['requires_user_field_startswith'] = 'Not available unless your <strong>{$a->field}</strong> starts withs <strong>{$a->value}</strong>.';
 $string['showavailability'] = 'Before activity can be accessed';
 $string['showavailabilitysection'] = 'Before section can be accessed';
 $string['showavailability_hide'] = 'Hide activity entirely';
 $string['showavailability_show'] = 'Show activity greyed-out, with restriction information';
 $string['showavailabilitysection_hide'] = 'Hide section entirely';
 $string['showavailabilitysection_show'] = 'Show section greyed-out, with restriction information';
+$string['startswith'] = 'starts with';
 $string['userfield'] = 'User field';
 $string['userfield_help'] = 'You can restrict access based on any field from the users profile.';
 $string['userrestriction_hidden'] = 'Restricted (completely hidden, no message): &lsquo;{$a}&rsquo;';
diff --git a/lib/conditionlib.php b/lib/conditionlib.php
index 650006a0288..a76a4f46dcb 100644
--- a/lib/conditionlib.php
+++ b/lib/conditionlib.php
@@ -79,6 +79,10 @@ define('OP_ENDS_WITH', 'endswith');
  * OP_IS_EMPTY - comparison operator that determines whether a specified user field is empty
  */
 define('OP_IS_EMPTY', 'isempty');
+/**
+ * OP_IS_NOT_EMPTY - comparison operator that determines whether a specified user field is not empty
+ */
+define('OP_IS_NOT_EMPTY', 'isnotempty');
 
 require_once($CFG->libdir.'/completionlib.php');
 
@@ -583,12 +587,13 @@ abstract class condition_info_base {
      */
     public static function get_condition_user_field_operators() {
         return array(
-            OP_CONTAINS => get_string('contains', 'filters'),
-            OP_DOES_NOT_CONTAIN => get_string('doesnotcontain', 'filters'),
-            OP_IS_EQUAL_TO => get_string('isequalto', 'filters'),
-            OP_STARTS_WITH => get_string('startswith', 'filters'),
-            OP_ENDS_WITH => get_string('endswith', 'filters'),
-            OP_IS_EMPTY => get_string('isempty', 'filters')
+            OP_CONTAINS => get_string('contains', 'condition'),
+            OP_DOES_NOT_CONTAIN => get_string('doesnotcontain', 'condition'),
+            OP_IS_EQUAL_TO => get_string('isequalto', 'condition'),
+            OP_STARTS_WITH => get_string('startswith', 'condition'),
+            OP_ENDS_WITH => get_string('endswith', 'condition'),
+            OP_IS_EMPTY => get_string('isempty', 'condition'),
+            OP_IS_NOT_EMPTY => get_string('isnotempty', 'condition'),
         );
     }
 
@@ -801,9 +806,9 @@ abstract class condition_info_base {
             foreach ($this->item->conditionsfield as $field => $details) {
                 $a = new stdclass;
                 $a->field = $details->fieldname;
-                $a->operator = get_string($details->operator, 'filters');
+                $a->operator = get_string($details->operator, 'condition');
                 $a->value = $details->value;
-                $information .= get_string('requires_user_field_restriction', 'condition', $a) . ' ';
+                $information .= get_string('requires_user_field', 'condition', $a) . ' ';
             }
         }
 
@@ -1008,9 +1013,8 @@ abstract class condition_info_base {
                     $available = false;
                     $a = new stdClass();
                     $a->field = $details->fieldname;
-                    $a->operator = get_string($details->operator, 'filters');
                     $a->value = $details->value;
-                    $information .= get_string('requires_user_field_restriction', 'condition', $a) . ' ';
+                    $information .= get_string('requires_user_field_'.$details->operator, 'condition', $a) . ' ';
                 }
             }
         }
@@ -1224,6 +1228,11 @@ abstract class condition_info_base {
                     $fieldconditionmet = false;
                 }
                 break;
+            case OP_IS_NOT_EMPTY: // is not empty
+                if (empty($uservalue)) {
+                    $fieldconditionmet = false;
+                }
+                break;
         }
         return $fieldconditionmet;
     }