diff --git a/packages/keyword-fn/fixture/fn-function.gs b/packages/keyword-fn/fixture/fn-function.gs
new file mode 100644
index 0000000..581311d
--- /dev/null
+++ b/packages/keyword-fn/fixture/fn-function.gs
@@ -0,0 +1 @@
+function fn() {}
diff --git a/packages/keyword-fn/index.js b/packages/keyword-fn/index.js
index 95ec05a..cb2cf16 100644
--- a/packages/keyword-fn/index.js
+++ b/packages/keyword-fn/index.js
@@ -1,4 +1,5 @@
 import {addKeyword, TokenType} from '../operator/index.js';
+import {tokTypes as tt} from 'acorn';
 
 export default function fn(Parser) {
     Parser.acorn.keywordTypes.fn = new TokenType('fn', {
@@ -13,7 +14,9 @@ export default function fn(Parser) {
         }
         
         parseStatement(context, topLevel, exports) {
-            if (this.type === Parser.acorn.keywordTypes.fn)
+            const isParen = this.eat(tt.parenL);
+            
+            if (!isParen && this.type === Parser.acorn.keywordTypes.fn)
                 this.type = Parser.acorn.keywordTypes.function;
             
             return super.parseStatement(context, topLevel, exports);
@@ -25,5 +28,15 @@ export default function fn(Parser) {
             
             return super.shouldParseExportStatement();
         }
+        
+        checkUnreserved(ref) {
+            const {name} = ref;
+            
+            if (name === 'fn')
+                return;
+            
+            return super.checkUnreserved(ref);
+        }
     };
 }
+
diff --git a/packages/keyword-fn/index.spec.js b/packages/keyword-fn/index.spec.js
index 69817e1..7b4209e 100644
--- a/packages/keyword-fn/index.spec.js
+++ b/packages/keyword-fn/index.spec.js
@@ -8,6 +8,11 @@ test('goldstein: keyword: fn', (t) => {
     t.end();
 });
 
+test('goldstein: keyword: fn-function', (t) => {
+    t.noCompile('fn-function');
+    t.end();
+});
+
 test('goldstein: keyword: fn: export', (t) => {
     t.compile('export');
     t.end();