diff --git a/src/pkg/syscall/types_darwin.c b/src/pkg/syscall/types_darwin.c
index 14deed681b..d7f7a74607 100644
--- a/src/pkg/syscall/types_darwin.c
+++ b/src/pkg/syscall/types_darwin.c
@@ -28,7 +28,6 @@ Input to godefs.  See also mkerrors.sh and mkall.sh
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <sys/types.h>
-#include <sys/types.h>
 #include <sys/un.h>
 #include <sys/wait.h>
 #include <unistd.h>