diff --git a/acinclude.m4 b/acinclude.m4
index 45cfaf6..42866de 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -134,10 +134,10 @@ AC_DEFUN([OVS_CHECK_LINUX], [
     AC_MSG_RESULT([$kversion])
 
     if test "$version" -ge 4; then
-       if test "$version" = 4 && test "$patchlevel" -le 0; then
+       if test "$version" = 4 && test "$patchlevel" -le 1; then
           : # Linux 4.x
        else
-          AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.0.x is not supported (please refer to the FAQ for advice)])
+          AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.1.x is not supported (please refer to the FAQ for advice)])
        fi
     elif test "$version" = 3; then
        : # Linux 3.x