diff --git a/malloc.c b/malloc.c
index 50a26f1..03e9c07 100644
--- a/malloc.c
+++ b/malloc.c
@@ -897,7 +897,7 @@ EXPORT void h_free(void *p) {
     deallocate(p);
 }
 
-EXPORT void h_cfree(void *ptr) __attribute__((alias("free")));
+EXPORT void h_cfree(void *ptr) ALIAS(h_free);
 
 EXPORT size_t h_malloc_usable_size(void *p) {
     if (p == NULL) {
diff --git a/util.h b/util.h
index 7917819..fa1eac4 100644
--- a/util.h
+++ b/util.h
@@ -10,6 +10,9 @@
 #define UNUSED __attribute__((unused))
 #define EXPORT __attribute__((visibility("default")))
 
+#define stringify(s) #s
+#define ALIAS(f) __attribute__((alias(stringify(f))))
+
 static inline int ffzl(long x) {
     return __builtin_ffsl(~x);
 }