diff --git a/compat/mingw.h b/compat/mingw.h
index 762eb143a76..b1156b865ea 100644
--- a/compat/mingw.h
+++ b/compat/mingw.h
@@ -109,7 +109,7 @@ static inline int mingw_unlink(const char *pathname)
 }
 #define unlink mingw_unlink
 
-static inline int waitpid(pid_t pid, unsigned *status, unsigned options)
+static inline int waitpid(pid_t pid, int *status, unsigned options)
 {
 	if (options == 0)
 		return _cwait(status, pid, 0);