diff --git a/Common/OS.cpp b/Common/OS.cpp
index 02b85acf76b3b36fb371deca00f79abeb7ab8327..961da73fcc2a2baba9520adbdef75876d02394e1 100644
--- a/Common/OS.cpp
+++ b/Common/OS.cpp
@@ -229,7 +229,8 @@ int SystemCall(const std::string &command, bool blocking)
   std::string cmd(command);
   if(!blocking) cmd += " &";
   Msg::Info("Calling '%s'", cmd.c_str());
-  return system(cmd.c_str());
+  system(cmd.c_str());
+  return 0;
 #endif
 }