diff --git a/configure.ac b/configure.ac
index 3bf9be40a8..ab61ab3175 100644
--- a/configure.ac
+++ b/configure.ac
@@ -961,7 +961,7 @@ fi
 AM_CONDITIONAL(BUILD_NMTUI, test "$build_nmtui" = yes)
 
 
-NM_COMPILER_WARNINGS
+NM_COMPILER_WARNINGS([yes])
 
 CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
 	-fno-strict-aliasing \
diff --git a/m4/compiler_options.m4 b/m4/compiler_options.m4
index ad03200a51..0023c36b91 100644
--- a/m4/compiler_options.m4
+++ b/m4/compiler_options.m4
@@ -37,7 +37,7 @@ AC_DEFUN([NM_COMPILER_WARNING], [
 AC_DEFUN([NM_COMPILER_WARNINGS],
 [AC_ARG_ENABLE(more-warnings,
 	AS_HELP_STRING([--enable-more-warnings], [Possible values: no/yes/error]),
-	set_more_warnings="$enableval",set_more_warnings=yes)
+	set_more_warnings="$enableval",set_more_warnings=$1)
 AC_MSG_CHECKING(for more warnings)
 if test "$GCC" = "yes" -a "$set_more_warnings" != "no"; then
 	AC_MSG_RESULT(yes)