diff --git a/Makefile b/Makefile
index 74cc0b3..385304f 100644
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,7 @@ build:
 	cd twopeg ; make nobos ; cd --
 	# clas12-elSpectro uses cmake:
 	mkdir build && cd build && cmake -DCMAKE_CXX_COMPILER=`which g++` -DCMAKE_C_COMPILER=`which gcc` ../ && cmake --build . --target install && cd ..
+	install build/clas12-elSpectro/elSpectro/jpacPhoto/libjpacPhoto.so lib
 	install clasdis/clasdis bin
 	install claspyth/claspyth bin
 	install dvcsgen/dvcsgen bin