diff --git a/qt-dab.pro b/qt-dab.pro
index 29176ad..e760609 100644
--- a/qt-dab.pro
+++ b/qt-dab.pro
@@ -285,8 +285,8 @@ spectrum {
 	HEADERS		+= ./includes/scopes-qwt6
         SOURCES         += ./optional-scope/spectrum-handler.cpp
 #correct this for the correct path to the qwt6 library on your system
-#	LIBS		+= -lqwt
-	LIBS		+= -lqwt-qt5
+	LIBS		+= -lqwt
+#	LIBS		+= -lqwt-qt5
 }
 
 #	devices