1 files changed, 1 insertions, 1 deletions
diff --git a/m4/ao.m4 b/m4/ao.m4
index a2bfa67de..a852ad86c 100644
--- a/m4/ao.m4
+++ b/m4/ao.m4
@@ -6,7 +6,7 @@
 dnl XIPH_PATH_AO([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
 dnl Test for libao, and define AO_CFLAGS and AO_LIBS
 dnl
-AC_DEFUN(XIPH_PATH_AO,
+AC_DEFUN([XIPH_PATH_AO],
 [dnl 
 dnl Get the cflags and libraries
 dnl