diff --git a/configure.ac b/configure.ac
index 3b958bd..9852e20 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,7 +9,7 @@
 
 AC_MSG_CHECKING([for supported operating system])
 case "$host_os" in
-linux*)
+*linux*)
 	opsys=linux
 	AC_DEFINE([LINUX], 1, [Define for the Linux operating system.])
 	;;