diff --git a/qtinterface/uic-tqt b/qtinterface/uic-tqt
index b355ade..dbe4697 100755
--- a/qtinterface/uic-tqt
+++ b/qtinterface/uic-tqt
@@ -10,9 +10,13 @@ else
 		fi
 	done
 
-	cp -Rp $uifile $uifile.bkp
-	tqt-replace $uifile
+	if [[ "$uifile" != "" ]]; then
+		cp -Rp $uifile $uifile.bkp
+		tqt-replace $uifile
+	fi
 	uic "$@"
-	cp -Rp $uifile.bkp $uifile
-	rm -f $uifile.bkp
+	if [[ "$uifile" != "" ]]; then
+		cp -Rp $uifile.bkp $uifile
+		rm -f $uifile.bkp
+	fi
 fi