diff --git a/src/stroke/Makefile.am b/src/stroke/Makefile.am
index 2f183495d..0de0134de 100644
--- a/src/stroke/Makefile.am
+++ b/src/stroke/Makefile.am
@@ -1,3 +1,4 @@
 ipsec_PROGRAMS = stroke
 
 stroke_SOURCES = stroke.c stroke.h
+INCLUDES = -I$(top_srcdir)/src/libstrongswan