1 files changed, 1 insertions, 1 deletions

diff --git a/m4/ogg.m4 b/m4/ogg.m4
index 91c823686..0e1f1abf5 100644
--- a/m4/ogg.m4
+++ b/m4/ogg.m4
@@ -28,7 +28,7 @@ AC_ARG_ENABLE(oggtest, [  --disable-oggtest       Do not try to compile and run
     OGG_CFLAGS="-I$ogg_includes"
   elif test "x$ogg_prefix" != "x" ; then
     OGG_CFLAGS="-I$ogg_prefix/include"
-  elif test "$prefix" != "xNONE"; then
+  elif test "x$prefix" != "xNONE"; then
     OGG_CFLAGS="-I$prefix/include"
   fi