diff --git a/configure.ac b/configure.ac
index 695a845..e0c06be 100644
--- a/configure.ac
+++ b/configure.ac
@@ -5,6 +5,7 @@ AC_CONFIG_MACRO_DIR([m4])
 
 AM_INIT_AUTOMAKE([-Wall -Werror subdir-objects])
 AM_SILENT_RULES
+m4_pattern_allow([AM_PROG_AR])
 AM_PROG_AR
 LT_INIT