diff --git a/c/Makefile.am b/c/Makefile.am
index 6b95506..12f7dcb 100644
--- a/c/Makefile.am
+++ b/c/Makefile.am
@@ -1,3 +1,5 @@
+INCLUDES = -I@top_srcdir@/c -I@scsh_includes@
+
 lib_LTLIBRARIES = libscshyp.la
 
 libscshyp_la_SOURCES = yp.c
\ No newline at end of file