diff --git a/extensions/proj.nacl/Makefile b/extensions/proj.nacl/Makefile
index 06960a376b..f5621ea907 100644
--- a/extensions/proj.nacl/Makefile
+++ b/extensions/proj.nacl/Makefile
@@ -59,6 +59,8 @@ EXTENSIONS_SOURCES = ../CCBReader/CCBFileLoader.cpp \
 ../spine/Slot.cpp \
 ../spine/SlotData.cpp \
 ../spine/extension.cpp \
+../spine/CCSkeleton.cpp \
+../spine/CCSkeletonAnimation.cpp \
 ../spine/spine-cocos2dx.cpp
 
 all: