diff --git a/Makefile.am b/Makefile.am
index d06cfa7..4ad3dad 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -55,8 +55,8 @@ cmHDR += src/libcm/vop/cmVectOps.h src/libcm/vop/cmProcTemplate.h
 
 cmSRC += src/libcm/vop/cmVectOps.c src/libcm/vop/cmProcTemplate.c
 
-cmHDR += src/libcm/cmProcObj.h src/libcm/cmProc.h src/libcm/cmProc2.h src/libcm/cmProc3.h src/libcm/cmProcTest.h
-cmSRC += src/libcm/cmProcObj.c src/libcm/cmProc.c src/libcm/cmProc2.c src/libcm/cmProc3.c src/libcm/cmProcTest.c
+cmHDR += src/libcm/cmProcObj.h src/libcm/cmProc.h src/libcm/cmProc2.h src/libcm/cmProc3.h src/libcm/cmProc4.h src/libcm/cmProcTest.h
+cmSRC += src/libcm/cmProcObj.c src/libcm/cmProc.c src/libcm/cmProc2.c src/libcm/cmProc3.c src/libcm/cmProc4.c src/libcm/cmProcTest.c
 
 
 cmHDR += src/libcm/app/cmOnset.h src/libcm/app/cmTimeLine.h src/libcm/app/cmScore.h src/libcm/app/cmPickup.h src/libcm/cmRbm.h