diff --git a/generic-python.SlackBuild b/generic-python.SlackBuild
index c6f28e63..a052d0b6 100755
--- a/generic-python.SlackBuild
+++ b/generic-python.SlackBuild
@@ -3,7 +3,7 @@
 # Generic python SlackBuild
 
 # variables
-TAG=gwh
+TAG=${TAG:-pip_gwh}
 TMP=/tmp/$TAG
 CWD=$(pwd)
 OUTPUT=/tmp
@@ -16,8 +16,6 @@ VERSION=${VERSION:-"pip"}
 ARCH=$(uname -m)
 BUILD=1
 
-PREFIX=/usr
-
 # nettoyage préalable
 rm -fr $PKG
 mkdir -p $PKG