diff --git a/src/unix/core.c b/src/unix/core.c
index c834aaae..27e949e9 100644
--- a/src/unix/core.c
+++ b/src/unix/core.c
@@ -667,7 +667,8 @@ int uv_getaddrinfo(uv_loop_t* loop,
 
 
 void uv_freeaddrinfo(struct addrinfo* ai) {
-  freeaddrinfo(ai);
+  if (ai)
+    freeaddrinfo(ai);
 }