--- a/Makefile.src.in
+++ b/Makefile.src.in
@@ -106,13 +106,13 @@
 ifeq ($(shell if test -d $(SRC_DIR)/../.git; then echo 1; fi), 1)
 # Find the revision like: gXXXXM-branch
 REV := g$(shell if head=`LC_ALL=C git rev-parse --verify HEAD 2>/dev/null`; then echo "$$head" | cut -c1-8; fi)$(shell if git diff-index HEAD | read dummy; then echo M; fi)$(shell git branch|grep '[*]' | sed 's/\* /-/;s/^-master$$//')
-REV_NR := $(shell echo `LC_ALL=C cd "$(SRC_DIR)/.." && git log --pretty=format:%s src | grep "^(svn r[0-9]*)" | head -n 1 | sed "s/.*(svn r\([0-9]*\)).*/\1/"` )
+REV_NR := $(shell LC_ALL=C cd "$(SRC_DIR)/.." && git log --pretty=format:%s src | grep -m 1 "^(svn r[0-9]*)" | sed "s/.*(svn r\([0-9]*\)).*/\1/" )
 else
 # Are we a hg (Mercurial) dir?
 ifeq ($(shell if test -d $(SRC_DIR)/../.hg; then echo 1; fi), 1)
 # Find the revision like: hXXXXM-branch
 REV := h$(shell if head=`LC_ALL=C hg tip 2>/dev/null`; then echo "$$head" | head -n 1 | cut -c19-26; fi)$(shell if hg status $(SRC_DIR) | grep -v '^?' | read dummy; then echo M; fi)$(shell hg branch | sed 's/^/-/;s/^-default$$//')
-REV_NR := $(shell LC_ALL=C hg log -k "svn" -l 1 --template "{desc}\n" $(SRC_DIR) | grep "^(svn r[0-9]*)" | head -n 1 | sed "s/.*(svn r\([0-9]*\)).*/\1/" )
+REV_NR := $(shell LC_ALL=C hg log -k "svn" -l 1 --template "{desc}\n" $(SRC_DIR) | grep -m 1 "^(svn r[0-9]*)" | sed "s/.*(svn r\([0-9]*\)).*/\1/" )
 endif
 endif
 endif