1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 4999078..e5b40b8 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ CFLAGS += `pkg-config --libs opencv`
 crop: crop.cc
 	g++ $(CFLAGS) crop.cc -o crop
 
-merge: merge.cc
+merge: merge.cc cxxopts/src/cxxopts.hpp
 	g++ -std=c++11 $(CFLAGS) merge.cc -o merge
 
 straighten: straighten.cc