diff --git a/src/includes/Makefile.am b/src/includes/Makefile.am
index d270bef81..472a1aa8a 100644
--- a/src/includes/Makefile.am
+++ b/src/includes/Makefile.am
@@ -1 +1,3 @@
+if ENABLE_LIBARIA2
 nobase_include_HEADERS = aria2/aria2.h
+endif # ENABLE_LIBARIA2