diff --git a/configure.ac b/configure.ac
index 97b151782a76c86644f2a36080a522b57f415e12..ada93378b15cd70d4e3578cf1cac76a16cf94f54 100644
--- a/configure.ac
+++ b/configure.ac
@@ -151,7 +151,7 @@ AC_DEFINE_UNQUOTED([SYSTEM_TYPE],["$ac_cv_build"], [System type])
 AC_SUBST([SYSTEM_TYPE],["$ac_cv_build"])
 #  ----------------------------------------------------------------------
 #  Check for math library
-AC_CHECK_LIB(m, floor)
+AC_SEARCH_LIBS(floor, m)
 #  ----------------------------------------------------------------------
 # Add basic configure options
 ACX_OPTIONS