diff --git a/compiler/main.v b/compiler/main.v
index a5144aa08e..fdf8646e47 100644
--- a/compiler/main.v
+++ b/compiler/main.v
@@ -195,7 +195,7 @@ fn (v mut V) compile() {
 
 
 #ifdef __APPLE__ 
-
+#include <pthread.h> 
 #endif