diff --git a/common/JackLoopbackDriver.cpp b/common/JackLoopbackDriver.cpp
index f4c5f776..ce494521 100644
--- a/common/JackLoopbackDriver.cpp
+++ b/common/JackLoopbackDriver.cpp
@@ -16,10 +16,10 @@ You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-*/
-
-#ifdef WIN32 
-#pragma warning (disable : 4786)
+*/
+
+#ifdef WIN32 
+#pragma warning (disable : 4786)
 #endif
 
 #include "JackLoopbackDriver.h"
@@ -42,8 +42,10 @@ int JackLoopbackDriver::Process()
 
     fGraphManager->ResumeRefNum(fClientControl, fSynchroTable); // Signal all clients
     if (fEngineControl->fSyncMode) {
-        if (fGraphManager->SuspendRefNum(fClientControl, fSynchroTable, fEngineControl->fTimeOutUsecs) < 0)
+        if (fGraphManager->SuspendRefNum(fClientControl, fSynchroTable, fEngineControl->fTimeOutUsecs) < 0) {
             jack_error("JackLoopbackDriver::ProcessSync SuspendRefNum error");
+			return -1;
+		}
     }
     return 0;
 }