diff --git a/src/unix/darwin.c b/src/unix/darwin.c
index 6b3705f6..e6deb301 100644
--- a/src/unix/darwin.c
+++ b/src/unix/darwin.c
@@ -73,6 +73,7 @@ uint64_t uv_hrtime() {
 int uv_exepath(char* buffer, size_t* size) {
   uint32_t usize;
   int result;
+  char* path;
   char* fullpath;
 
   if (!buffer || !size) {
@@ -83,9 +84,11 @@ int uv_exepath(char* buffer, size_t* size) {
   result = _NSGetExecutablePath(buffer, &usize);
   if (result) return result;
 
-  fullpath = realpath(buffer, NULL);
+  path = (char*)malloc(2 * PATH_MAX);
+  fullpath = realpath(buffer, path);
 
   if (fullpath == NULL) {
+    free(path);
     return -1;
   }