diff --git a/src/builtins.ts b/src/builtins.ts
index 79d7eb1d01..22228cfb22 100644
--- a/src/builtins.ts
+++ b/src/builtins.ts
@@ -9614,7 +9614,10 @@ function ensureVisitMembersOf(compiler: Compiler, instance: Class): void {
   );
 
   // And make sure the base visitor function exists
-  if (base) ensureVisitMembersOf(compiler, base);
+  if (base && base.type.isManaged) {
+    // errored earlier if not managed
+    ensureVisitMembersOf(compiler, base);
+  }
 }
 
 /** Compiles the `__visit_members` function. */
diff --git a/tests/compiler/unmanaged-errors.json b/tests/compiler/unmanaged-errors.json
new file mode 100644
index 0000000000..a636c438c9
--- /dev/null
+++ b/tests/compiler/unmanaged-errors.json
@@ -0,0 +1,9 @@
+{
+  "asc_flags": [
+  ],
+  "stderr": [
+    "AS207: Unmanaged classes cannot extend managed classes and vice-versa.", "UnmanagedFoo extends ManagedBase",
+    "AS207: Unmanaged classes cannot extend managed classes and vice-versa.", "ManagedFoo extends UnmanagedBase",
+    "EOF"
+  ]
+}
diff --git a/tests/compiler/unmanaged-errors.ts b/tests/compiler/unmanaged-errors.ts
new file mode 100644
index 0000000000..335ff73703
--- /dev/null
+++ b/tests/compiler/unmanaged-errors.ts
@@ -0,0 +1,12 @@
+export class ManagedBase {}
+@unmanaged export class UnmanagedFoo extends ManagedBase {} // AS207
+
+// see: https://github.com/AssemblyScript/assemblyscript/issues/2067
+
+@unmanaged export class UnmanagedBase {}
+export class ManagedBaz {}
+export class ManagedFoo extends UnmanagedBase { // AS207
+  constructor(public baz: ManagedBaz) { super(); }
+}
+
+ERROR("EOF");