diff --git a/t/Makefile.am b/t/Makefile.am
index ea340c6..1dfa933 100644
--- a/t/Makefile.am
+++ b/t/Makefile.am
@@ -1,4 +1,4 @@
-AM_CPPFLAGS = 
+AM_CPPFLAGS = -I$(top_srcdir)/include
 
 EXTRA_DIST =
 noinst_HEADERS =