diff --git a/Makefile.defs b/Makefile.defs
index 88a23b8f..edede349 100644
--- a/Makefile.defs
+++ b/Makefile.defs
@@ -7,7 +7,7 @@ GIT = $(shell which git)
 SVNVERSION = $(shell which svnversion)
 
 ifneq ($(GIT),)
-   SCM_REV = $(shell if git --help describe |grep dirty 2>&1 >/dev/null ; then git describe --always --dirty; else git describe --always ; fi) 
+   SCM_REV = $(shell if git --help describe |grep dirty 2>&1 >/dev/null ; then git describe --always --dirty; else git describe --always ; fi)
 endif
 
 ifeq ($(SCM_REV),)