diff --git a/tools/applypatch/Android.mk b/tools/applypatch/Android.mk
index fe317ff..9a6d2be 100644
--- a/tools/applypatch/Android.mk
+++ b/tools/applypatch/Android.mk
@@ -17,7 +17,7 @@
 LOCAL_PATH := $(call my-dir)
 include $(CLEAR_VARS)
 
-LOCAL_SRC_FILES := applypatch.c bsdiff.c freecache.c imgpatch.c
+LOCAL_SRC_FILES := applypatch.c bsdiff.c freecache.c imgpatch.c utils.c
 LOCAL_MODULE := libapplypatch
 LOCAL_MODULE_TAGS := eng
 LOCAL_C_INCLUDES += external/bzip2 external/zlib bootable/recovery
@@ -39,7 +39,7 @@
 
 include $(CLEAR_VARS)
 
-LOCAL_SRC_FILES := imgdiff.c
+LOCAL_SRC_FILES := imgdiff.c utils.c
 LOCAL_MODULE := imgdiff
 LOCAL_FORCE_STATIC_EXECUTABLE := true
 LOCAL_MODULE_TAGS := eng