diff --git a/configure.ac b/configure.ac
index 4e22259..f1021ad 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,6 +4,8 @@ AC_CONFIG_AUX_DIR(config)
 AC_CONFIG_SRCDIR(./src/blob.c)
 AC_CONFIG_MACRO_DIR([m4])
 
+m4_pattern_allow([AM_DEFAULT_VERBOSITY])
+
 AM_INIT_AUTOMAKE
 AX_CODE_COVERAGE