diff --git a/src/alloc-override.c b/src/alloc-override.c
index f97b6e78..af9035dd 100644
--- a/src/alloc-override.c
+++ b/src/alloc-override.c
@@ -173,7 +173,7 @@ extern "C" {
 void   cfree(void* p)                    MI_FORWARD0(mi_free, p)
 void*  reallocf(void* p, size_t newsize) MI_FORWARD2(mi_reallocf,p,newsize)
 size_t malloc_size(const void* p)        MI_FORWARD1(mi_usable_size,p)
-#if !defined(__ANDROID__)
+#if !defined(__ANDROID__) && !defined(__FreeBSD__)
 size_t malloc_usable_size(void *p)       MI_FORWARD1(mi_usable_size,p)
 #else
 size_t malloc_usable_size(const void *p) MI_FORWARD1(mi_usable_size,p)