diff --git a/Makefile b/Makefile
index 2981875..c664bfe 100644
--- a/Makefile
+++ b/Makefile
@@ -1,11 +1,14 @@
 COMMAND=. ~/salome/SALOME-MECA-2014.1-LGPL/salome_prerequisites.sh;~/salome/SALOME-MECA-2014.1-LGPL/tools/Code_aster_frontend_20141/bin/codeaster-run
+GC=git checkout
+GM=$(GC) master
 
 all: cc_s0
 
-calcAll: regular d1 d2 d3 d4 d5 d6
+cc_s0: cc_s0.gt regular d1 d2 d3 d4 d5 d6 
+	$(GM)
 
-cc_s0:
-	git checkout cc_s0; calcAll
+cc_s0.gt:
+	$(GC) cc_s0
 
 regular:
 	$(COMMAND) regular.export