diff --git a/packages/next-yak/runtime/__tests__/cssPropTest.tsx b/packages/next-yak/runtime/__tests__/cssPropTest.tsx
index 886dbcd2..3d0e8dd0 100644
--- a/packages/next-yak/runtime/__tests__/cssPropTest.tsx
+++ b/packages/next-yak/runtime/__tests__/cssPropTest.tsx
@@ -136,3 +136,36 @@ const ComponentWithDynamicCSSVarsButWithoutOwnProps = () => {
     />
   );
 };
+
+const ComponentWithDynamicCSSWithOwnPropsShouldGenerateTypeError = () => {
+  return (
+    <div
+      // @ts-expect-error - properties not supported
+      css={css<{ $primary: boolean }>`
+        padding: ${({ $primary }) => $primary && "20px"};
+      `}
+    />
+  );
+};
+
+const dynamicMixin = css<{ $primary: boolean }>`
+  ${({ $primary }) =>
+    $primary &&
+    css`
+      font-size: 1.7rem;
+    `}
+`;
+
+const ComponentWithCSSThatUsesDynamicMixinWithOwnPropsShouldGenerateTypeError =
+  () => {
+    return (
+      <div
+        css={css`
+          ${
+            // @ts-expect-error - properties not supported
+            dynamicMixin
+          }
+        `}
+      />
+    );
+  };