diff --git a/m4/ax_cxx_compile_stdcxx_11.m4 b/m4/ax_cxx_compile_stdcxx_11.m4
index 40c94b6..2d40ac1 100644
--- a/m4/ax_cxx_compile_stdcxx_11.m4
+++ b/m4/ax_cxx_compile_stdcxx_11.m4
@@ -58,14 +58,14 @@
   AC_ARG_WITH([c++11],
     AS_HELP_STRING(
         [--with-c++11=@<:@ARG@:>@],
-        [use C++11 when available @<:@default=yes@:>@]
+        [use C++11 when available @<:@default=no@:>@]
     ),
     [
-    if test "$withval" = "no"; then
-        WANT_CXX11="no"
+    if test "$withval" = "yes"; then
+        WANT_CXX11="yes"
     fi
     ],
-    [WANT_CXX11="yes"]
+    [WANT_CXX11="no"]
   )
 
   if test "x$WANT_CXX11" = "xyes"; then