diff --git a/CoreFoundation/Base.subproj/CFPlatform.c b/CoreFoundation/Base.subproj/CFPlatform.c
index bf332973eb..033f438436 100644
--- a/CoreFoundation/Base.subproj/CFPlatform.c
+++ b/CoreFoundation/Base.subproj/CFPlatform.c
@@ -1711,7 +1711,7 @@ int _CFOpenFile(const char *path, int opts) {
 }
 
 CF_CROSS_PLATFORM_EXPORT void *_CFReallocf(void *ptr, size_t size) {
-#if TARGET_OS_WIN32 || TARGET_OS_LINUX || defined(__OpenBSD__)
+#if TARGET_OS_WIN32 || TARGET_OS_LINUX || TARGET_OS_WASI || defined(__OpenBSD__)
     void *mem = realloc(ptr, size);
     if (mem == NULL && ptr != NULL && size != 0) {
         free(ptr);