diff --git a/src/compat/compat.c b/src/compat/compat.c
index 572ed451f..9c0d1feb4 100644
--- a/src/compat/compat.c
+++ b/src/compat/compat.c
@@ -28,7 +28,9 @@ int set_fd_nonblocking(int fd, unsigned state, unsigned* oldstate){ // FIXME
 pid_t waitpid(pid_t pid, int* state, int options){
   (void)options; // FIXME honor WNOHANG
   WaitForSingleObject(pid, INFINITE);
-  GetExitCodeProcess(pid, state);
+  long unsigned pstate;
+  GetExitCodeProcess(pid, &pstate);
+  *state = pstate;
   CloseHandle(pid);
   return pid;
 }