diff --git a/utils/regtools/qeditor/backend.cpp b/utils/regtools/qeditor/backend.cpp
index 15867821e3..eebda31989 100644
--- a/utils/regtools/qeditor/backend.cpp
+++ b/utils/regtools/qeditor/backend.cpp
@@ -211,6 +211,7 @@ bool HWStubDevice::Open()
     if(m_hwdev == 0)
     {
         libusb_close(m_handle);
+        m_handle = 0;
         return false;
     }
     return true;