diff --git a/src/preprocessor/preprocessor.test.ts b/src/preprocessor/preprocessor.test.ts
index 0ddc16a..8e74dbb 100644
--- a/src/preprocessor/preprocessor.test.ts
+++ b/src/preprocessor/preprocessor.test.ts
@@ -335,17 +335,17 @@ foo`);
 
 test(`function macro where source variable is same as macro argument`, () => {
   const program = `
-#define GE(x, y) x + y
-GE(y, x);
-GE(y.y, x.x);
-GE(yy, xx);
+#define FN(x, y) x + y
+FN(y, x);
+FN(y.y, x.x);
+FN(yy, xx);
 `;
 
   const ast = parse(program);
   preprocessAst(ast);
 
-  // Ensure that if the argument passed to the fn GE(X) has the
-  // same name as the macro definition #define GE(X), it doesn't get expanded
+  // Ensure that if the argument passed to the fn FN(X) has the
+  // same name as the macro definition #define FN(X), it doesn't get expanded
   // https://github.com/ShaderFrog/glsl-parser/issues/31
   expect(generate(ast)).toBe(`
 y + x;