diff --git a/Makefile b/Makefile
index b7d4541..705fd92 100644
--- a/Makefile
+++ b/Makefile
@@ -7,8 +7,8 @@ QEDA := qeda
 VERSION := $(shell cat version)
 # current date for stamping output
 DATE = $(shell date +%Y-%m-%d)
-# revision based on number of changes on schematic or board layout and current git commit
-REVISION := $(shell git log --pretty=oneline "${NAME}.kicad_sch" "${NAME}.kicad_pcb" | wc -l) $(shell git rev-parse --short HEAD)
+# revision based on number of changes on schematic or board layout
+REVISION := $(shell git log --pretty=oneline "${NAME}.kicad_sch" "${NAME}.kicad_pcb" | wc -l)
 
 # generate file with version information
 VERSIONED_EXT = kicad_sch kicad_pcb kicad_pro json