diff --git a/packages/eslint-plugin/src/rules/no-unnecessary-qualifier.ts b/packages/eslint-plugin/src/rules/no-unnecessary-qualifier.ts
index 34f973667c5..329b26d87ae 100644
--- a/packages/eslint-plugin/src/rules/no-unnecessary-qualifier.ts
+++ b/packages/eslint-plugin/src/rules/no-unnecessary-qualifier.ts
@@ -93,9 +93,8 @@ export default createRule({
         accessedSymbol.flags,
         context.sourceCode.getText(name),
       );
-      return (
-        fromScope === undefined || symbolsAreEqual(accessedSymbol, fromScope)
-      );
+
+      return !!fromScope && symbolsAreEqual(accessedSymbol, fromScope);
     }
 
     function visitNamespaceAccess(
diff --git a/packages/eslint-plugin/tests/rules/no-unnecessary-qualifier.test.ts b/packages/eslint-plugin/tests/rules/no-unnecessary-qualifier.test.ts
index 5f118f55ff6..d03236ac218 100644
--- a/packages/eslint-plugin/tests/rules/no-unnecessary-qualifier.test.ts
+++ b/packages/eslint-plugin/tests/rules/no-unnecessary-qualifier.test.ts
@@ -57,6 +57,30 @@ namespace X {
     `
 namespace X {
   const z = X.y;
+}
+    `,
+    `
+enum Foo {
+  One,
+}
+
+namespace Foo {
+  export function bar() {
+    return Foo.One;
+  }
+}
+    `,
+    `
+namespace Foo {
+  export enum Foo {
+    One,
+  }
+}
+
+namespace Foo {
+  export function bar() {
+    return Foo.One;
+  }
 }
     `,
   ],