diff --git a/m4/virt-login-shell.m4 b/m4/virt-login-shell.m4
index c77ffb52ed..d5e2e00e73 100644
--- a/m4/virt-login-shell.m4
+++ b/m4/virt-login-shell.m4
@@ -22,7 +22,7 @@ AC_DEFUN([LIBVIRT_CHECK_LOGIN_SHELL], [
 
   if test "x$with_login_shell" != "xno"; then
     if test "x$with_win" = "xyes"; then
-      if "x$with_login_shell" = "yes"; then
+      if test "x$with_login_shell" = "xyes"; then
         AC_MSG_ERROR([virt-login-shell is not supported on Windows])
       else
         with_login_shell=no;