diff --git a/105string-equal.subx b/105string-equal.subx
index 783a7dd9..d3f11402 100644
--- a/105string-equal.subx
+++ b/105string-equal.subx
@@ -250,7 +250,7 @@ $check-strings-equal:end:
 
 # test the helper
 test-check-strings-equal:
-    # check-strings-equal?("Abc", "Abc")
+    # check-strings-equal("Abc", "Abc")
     # . . push args
     68/push  "Abc"/imm32
     68/push  "Abc"/imm32