2 files changed, 3 insertions, 3 deletions

diff --git a/include/mingw.h b/include/mingw.h
index 7224ba50a..a32d78ad0 100644
--- a/include/mingw.h
+++ b/include/mingw.h
@@ -340,7 +340,7 @@ int setitimer(int type, struct itimerval *in, struct itimerval *out);
  */
 #define WNOHANG 1
 #define WUNTRACED 2
-int waitpid(pid_t pid, int *status, unsigned options);
+int waitpid(pid_t pid, int *status, int options);
 
 /*
  * time.h
diff --git a/win32/process.c b/win32/process.c
index 318515375..e38792b5a 100644
--- a/win32/process.c
+++ b/win32/process.c
@@ -1,13 +1,13 @@
 #include "libbb.h"
 #include <tlhelp32.h>
 
-int waitpid(pid_t pid, int *status, unsigned options)
+int waitpid(pid_t pid, int *status, int options)
 {
         HANDLE proc;
         int ret;
 
         /* Windows does not understand parent-child */
-        if (options == 0 && pid != -1) {
+        if (pid > 0 && options == 0) {
                 if ( (proc=OpenProcess(SYNCHRONIZE|PROCESS_QUERY_INFORMATION,
                                                 FALSE, pid)) != NULL ) {
                         ret = _cwait(status, proc, 0);