diff --git a/src/Android.mk b/src/Android.mk
index 8f7c729..81136e5 100644
--- a/src/Android.mk
+++ b/src/Android.mk
@@ -11,11 +11,13 @@
 
 LOCAL_PATH:= $(call my-dir)
 
+HEAD_COMMIT = `git rev-parse --short HEAD`
+
 include $(CLEAR_VARS)
 
 LOCAL_MODULE    := iodine
 LOCAL_SRC_FILES := tun.c dns.c read.c encoding.c login.c base32.c base64.c base64u.c base128.c md5.c common.c iodine.c client.c util.c
-LOCAL_CFLAGS    := -c -DANDROID -DLINUX -DIFCONFIGPATH=\"/system/bin/\" -Wall
+LOCAL_CFLAGS    := -c -DANDROID -DLINUX -DIFCONFIGPATH=\"/system/bin/\" -Wall -DGITREVISION=\"$(HEAD_COMMIT)\"
 LOCAL_LDLIBS    := -lz
 
 include $(BUILD_EXECUTABLE)