diff --git a/kmobile/kmobiledevice.cpp b/kmobile/kmobiledevice.cpp
index abf75057..72394647 100644
--- a/kmobile/kmobiledevice.cpp
+++ b/kmobile/kmobiledevice.cpp
@@ -382,12 +382,14 @@ bool KMobileDevice::unlockDevice(const TQString &device)
 #ifdef HAVE_BAUDBOY_H
   return ttyunlock(device.local8bit()) == EXIT_SUCCESS;
 #else
-  if (m_fd != -1)
-  {
-		flock(m_fd, LOCK_UN);
+  if (m_fd != -1) {
+	if(flock(m_fd, LOCK_UN)) {
+		return false;
 	}
-  close(m_fd);
+	close(m_fd);
+  }
   m_fd = -1;
+  return true;
 #endif
 }