diff --git a/lib/utils/properties-panel.js b/lib/utils/properties-panel.js
index bad6396..ec2caf7 100644
--- a/lib/utils/properties-panel.js
+++ b/lib/utils/properties-panel.js
@@ -313,9 +313,9 @@ export function getErrorMessage(id, report) {
     executionPlatformVersion
   } = report;
 
-  // do not override FEEL message
+  // adjust FEEL message
   if (data.type === ERROR_TYPES.FEEL_EXPRESSION_INVALID) {
-    return;
+    return 'Unparsable FEEL expression.';
   }
 
   if (data.type === ERROR_TYPES.EXPRESSION_NOT_ALLOWED) {
diff --git a/test/spec/utils/properties-panel.spec.js b/test/spec/utils/properties-panel.spec.js
index ec529ca..cbc302f 100644
--- a/test/spec/utils/properties-panel.spec.js
+++ b/test/spec/utils/properties-panel.spec.js
@@ -1303,6 +1303,33 @@ describe('utils/properties-panel', function() {
         const INVALID_FEEL = '===';
 
 
+        it('should adjust error message', async function() {
+
+          // given
+          const node = createElement('bpmn:ServiceTask', {
+            id: 'ServiceTask_1',
+            extensionElements: createElement('bpmn:ExtensionElements', {
+              values: [
+                createElement('zeebe:IoMapping', {
+                  inputParameters: [
+                    createElement('zeebe:Input', {
+                      source: INVALID_FEEL
+                    })
+                  ]
+                })
+              ]
+            })
+          });
+
+          // when
+          const report = await getLintError(node, rule);
+          const entryIds = getEntryIds(report);
+
+          // then
+          expectErrorMessage(entryIds[ 0 ], 'Unparsable FEEL expression.', report);
+        });
+
+
         it('should return error for input mapping', async function() {
 
           // given