diff --git a/include/mimalloc-override.h b/include/mimalloc-override.h
index c63b0b91..b79a6b3b 100644
--- a/include/mimalloc-override.h
+++ b/include/mimalloc-override.h
@@ -43,6 +43,7 @@ not accidentally mix pointers from different allocators).
 #define reallocf(p,n)           mi_reallocf(p,n)
 #define malloc_size(p)          mi_usable_size(p)
 #define malloc_usable_size(p)   mi_usable_size(p)
+#define malloc_good_size(sz)    mi_malloc_good_size(sz)
 #define cfree(p)                mi_free(p)
 
 #define valloc(n)               mi_valloc(n)