diff --git a/src/libusbmuxd.c b/src/libusbmuxd.c
index 2897da6..485857b 100644
--- a/src/libusbmuxd.c
+++ b/src/libusbmuxd.c
@@ -813,7 +813,10 @@
 
 #ifdef WIN32
 	if (devmon != NULL) {
-		WaitForSingleObject(devmon, INFINITE);
+		res = WaitForSingleObject(devmon, INFINITE);
+		if (res != 0) {
+			return res;
+		}
 	}
 #else
 	res = pthread_kill(devmon, 0);