diff --git a/plugins/cffadaptor/src/UBCFFAdaptor.cpp b/plugins/cffadaptor/src/UBCFFAdaptor.cpp
index 68ec3ff9..10a8aca5 100644
--- a/plugins/cffadaptor/src/UBCFFAdaptor.cpp
+++ b/plugins/cffadaptor/src/UBCFFAdaptor.cpp
@@ -858,7 +858,7 @@ bool UBCFFAdaptor::UBToCFFConverter::itIsSupportedFormat(const QString &format)
 
     QStringList tsl = format.split(".", QString::SkipEmptyParts);
     if (0 < tsl.count())
-        bRet = cffSupportedFileFormats.contains(tsl.at(tsl.count()-1));       
+        bRet = cffSupportedFileFormats.contains(tsl.at(tsl.count()-1).toLower());       
     else
         bRet = false;