diff --git a/common/os_calls.c b/common/os_calls.c
index 75dfaa2d..7aa47c5a 100644
--- a/common/os_calls.c
+++ b/common/os_calls.c
@@ -429,6 +429,10 @@ g_tcp_select(int sck1, int sck2)
       rv = rv | 2;
     }
   }
+  else
+  {
+    rv = 0;
+  }
   return rv;
 }