diff --git a/Makefile.am b/Makefile.am
index 17dc509..7f449d7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,6 +1,6 @@
 SUBDIRS = src po help
 
-ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAG}
+ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
 
 NULL =