diff --git a/include/polarssl/compat-1.2.h b/include/polarssl/compat-1.2.h
index 7ebc9c1..15b5aa1 100644
--- a/include/polarssl/compat-1.2.h
+++ b/include/polarssl/compat-1.2.h
@@ -171,7 +171,7 @@
 #warning "rsa_pkcs1_verify() prototype changed. Manual change required if used"
 #warning "rsa_pkcs1_decrypt() prototype changed. Manual change required if used"
 #endif
-#endif
+#endif /* POLARSSL_RSA_C */
 
 #if defined(POLARSSL_DHM_C)
 #if defined(SHOW_PROTOTYPE_CHANGE_WARNINGS)