diff --git a/editor/src/core/property-controls/property-controls-local.spec.tsx b/editor/src/core/property-controls/property-controls-local.spec.tsx
index 8fbdc77508ac..f5279a5e828e 100644
--- a/editor/src/core/property-controls/property-controls-local.spec.tsx
+++ b/editor/src/core/property-controls/property-controls-local.spec.tsx
@@ -409,7 +409,7 @@ describe('registered property controls', () => {
             fileName: '/utopia/components.utopia.js',
             message: "Validation failed: Component registered for key 'Card' is undefined",
             passTime: null,
-            severity: 'fatal',
+            severity: 'warning',
             source: 'component-descriptor',
             startColumn: null,
             startLine: null,
@@ -625,7 +625,7 @@ describe('registered property controls', () => {
             message:
               'Validation failed: Component name (Card) does not match the registration key (Cart)',
             passTime: null,
-            severity: 'fatal',
+            severity: 'warning',
             source: 'component-descriptor',
             startColumn: null,
             startLine: null,
@@ -677,7 +677,7 @@ describe('registered property controls', () => {
             message:
               'Validation failed: Module name (/src/card) does not match the module key (/src/cardd)',
             passTime: null,
-            severity: 'fatal',
+            severity: 'warning',
             source: 'component-descriptor',
             startColumn: null,
             startLine: null,
@@ -729,7 +729,7 @@ describe('registered property controls', () => {
             message:
               'Validation failed: Component name (View) does not match the registration key (Vieww)',
             passTime: null,
-            severity: 'fatal',
+            severity: 'warning',
             source: 'component-descriptor',
             startColumn: null,
             startLine: null,
@@ -781,7 +781,7 @@ describe('registered property controls', () => {
             message:
               'Validation failed: Module name (utopia-api) does not match the module key (utopia-apii)',
             passTime: null,
-            severity: 'fatal',
+            severity: 'warning',
             source: 'component-descriptor',
             startColumn: null,
             startLine: null,
@@ -832,7 +832,7 @@ describe('registered property controls', () => {
             message:
               'Validation failed: Component name (Card) does not match the registration key (Cart)',
             passTime: null,
-            severity: 'fatal',
+            severity: 'warning',
             source: 'component-descriptor',
             startColumn: null,
             startLine: null,
@@ -2069,7 +2069,7 @@ describe('Lifecycle management of registering components', () => {
         fileName: '/utopia/components.utopia.js',
         message: "Validation failed: Component registered for key 'Card' is undefined",
         passTime: null,
-        severity: 'fatal',
+        severity: 'warning',
         source: 'component-descriptor',
         startColumn: null,
         startLine: null,
diff --git a/editor/src/core/property-controls/property-controls-local.ts b/editor/src/core/property-controls/property-controls-local.ts
index e67d3a13ff10..993176463979 100644
--- a/editor/src/core/property-controls/property-controls-local.ts
+++ b/editor/src/core/property-controls/property-controls-local.ts
@@ -99,7 +99,7 @@ import {
   jsxElementNameFromString,
   jsxTextBlock,
 } from '../shared/element-template'
-import type { ErrorMessage } from '../shared/error-messages'
+import type { ErrorMessage, ErrorMessageSeverity } from '../shared/error-messages'
 import { errorMessage } from '../shared/error-messages'
 import { dropFileExtension } from '../shared/file-utils'
 import type { FancyError } from '../shared/code-exec-utils'
@@ -418,7 +418,11 @@ async function getComponentDescriptorPromisesFromParseResult(
   }
 }
 
-function simpleErrorMessage(fileName: string, error: string): ErrorMessage {
+function simpleErrorMessage(
+  fileName: string,
+  error: string,
+  severity: ErrorMessageSeverity = 'fatal',
+): ErrorMessage {
   return errorMessage(
     fileName,
     null,
@@ -426,7 +430,7 @@ function simpleErrorMessage(fileName: string, error: string): ErrorMessage {
     null,
     null,
     '',
-    'fatal',
+    severity,
     '',
     error,
     '',
@@ -490,6 +494,7 @@ function errorsFromComponentRegistration(
             `Validation failed: ${messageForComponentRegistrationValidationError(
               error.validationError,
             )}`,
+            'warning',
           ),
         ]
       default: