diff --git a/awx/ui/client/lib/components/code-mirror/modal/code-mirror-modal.directive.js b/awx/ui/client/lib/components/code-mirror/modal/code-mirror-modal.directive.js
index a4051084b0..3c0ad60a07 100644
--- a/awx/ui/client/lib/components/code-mirror/modal/code-mirror-modal.directive.js
+++ b/awx/ui/client/lib/components/code-mirror/modal/code-mirror-modal.directive.js
@@ -17,10 +17,12 @@ function atCodeMirrorModalController (
         } else if ($scope.disabled === 'false') {
             $scope.disabled = false;
         }
-        const editor = $(`${CodeMirrorModalID} .CodeMirror`)[0].CodeMirror;
-        const height = $(ModalHeight).height() - $(ModalHeader).height() -
-            $(ModalFooter).height() - 100;
-        editor.setSize('100%', height);
+        const editor = $(`${CodeMirrorModalID} .CodeMirror`)[0];
+        if (editor) {
+            const height = $(ModalHeight).height() - $(ModalHeader).height() -
+                $(ModalFooter).height() - 100;
+            editor.CodeMirror.setSize('100%', height);
+        }
     }
 
     function toggle () {