diff --git a/src/init.c b/src/init.c
index 5dc57300..0f4d4f40 100644
--- a/src/init.c
+++ b/src/init.c
@@ -380,8 +380,6 @@ void mi_thread_done(void) mi_attr_noexcept {
   _mi_thread_done(NULL);
 }
 
-#include <unistd.h>
-
 void _mi_thread_done(mi_heap_t* heap) 
 {
   // calling with NULL implies using the default heap