diff --git a/qwt.be0 b/qwt.be0
index 3e76df3f4..db14313ac 100755
--- a/qwt.be0
+++ b/qwt.be0
@@ -23,8 +23,7 @@ build_in_sourcedir
 #}
 
 mee_patch_post() {
-    sed -i ${S}/qwtconfig.pri \
-        -e 's,QWT_INSTALL_PREFIX.*=.*$,QWT_INSTALL_PREFIX = $$[QT_INSTALL_PREFIX],'
+    sed -i ${S}/qwtconfig.pri -e '/^\s\s*QWT_INSTALL_PREFIX/ s,QWT,# QWT,'
 }
 
 mee_configure() {