diff --git a/stepmania/autoconf/m4/video.m4 b/stepmania/autoconf/m4/video.m4
index e9d8d633f6..b61fa46cbb 100644
--- a/stepmania/autoconf/m4/video.m4
+++ b/stepmania/autoconf/m4/video.m4
@@ -3,22 +3,22 @@ AC_ARG_WITH(ffmpeg, AC_HELP_STRING([--without-ffmpeg], [Disable ffmpeg support])
 AC_ARG_WITH(static-ffmpeg-prefix, AC_HELP_STRING([--with-static-ffmpeg-prefix=path], [Path to ffmpeg prefix]), with_static_ffmpeg_prefix=$withval, with_static_ffmpeg_prefix=)
 
 if test "$with_ffmpeg" = "yes"; then
-if test -n "$with_static_ffmpeg_prefix"; then
-if test $(echo $with_static_ffmpeg_prefix|cut -c 1) != /; then
-with_static_ffmpeg_prefix=$(/bin/pwd)/$with_static_ffmpeg_prefix
-fi
-CFLAGS="-I$with_static_ffmpeg_prefix/include $CFLAGS"
-CXXFLAGS="-I$with_static_ffmpeg_prefix/include $CXXFLAGS"
-old_LIBS="$LIBS"
-LIBS="$with_static_ffmpeg_prefix/lib/libavcodec.a $LIBS"
-AC_CHECK_FUNC([avcodec_init], have_libavcodec=yes; old_LIBS="$LIBS", have_libavcodec=no)
-LIBS="$with_static_ffmpeg_prefix/lib/libavformat.a $LIBS"
-AC_CHECK_FUNC([guess_format], have_libavformat=yes; old_LIBS="$LIBS", have_libavformat=no)
-LIBS="$old_LIBS"
-else
-AC_SEARCH_LIBS(avcodec_init, [avcodec], have_libavcodec=yes,  have_libavcodec=no)
-AC_SEARCH_LIBS(guess_format, [avformat], have_libavformat=yes,  have_libavformat=no)
-fi
+	if test -n "$with_static_ffmpeg_prefix"; then
+		if test $(echo $with_static_ffmpeg_prefix|cut -c 1) != /; then
+			with_static_ffmpeg_prefix=$(/bin/pwd)/$with_static_ffmpeg_prefix
+		fi
+		CFLAGS="-I$with_static_ffmpeg_prefix/include $CFLAGS"
+		CXXFLAGS="-I$with_static_ffmpeg_prefix/include $CXXFLAGS"
+		old_LIBS="$LIBS"
+		LIBS="$with_static_ffmpeg_prefix/lib/libavcodec.a $LIBS"
+		AC_CHECK_FUNC([avcodec_init], have_libavcodec=yes; old_LIBS="$LIBS", have_libavcodec=no)
+		LIBS="$with_static_ffmpeg_prefix/lib/libavformat.a $LIBS"
+		AC_CHECK_FUNC([guess_format], have_libavformat=yes; old_LIBS="$LIBS", have_libavformat=no)
+		LIBS="$old_LIBS"
+	else
+		AC_SEARCH_LIBS(avcodec_init, [avcodec], have_libavcodec=yes,  have_libavcodec=no)
+		AC_SEARCH_LIBS(guess_format, [avformat], have_libavformat=yes,  have_libavformat=no)
+	fi
 
 if test "$have_libavcodec" = "yes"; then
   AC_MSG_CHECKING([for matching libavcodec headers and libs])