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-rw-r--r--libvo/vo_png.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libvo/vo_png.c b/libvo/vo_png.c
index 2d56f817d2..c5355b35e8 100644
--- a/libvo/vo_png.c
+++ b/libvo/vo_png.c
@@ -32,7 +32,7 @@ static vo_info_t info =
LIBVO_EXTERN (png)
-int z_compression = Z_NO_COMPRESSION;
+static int z_compression = Z_NO_COMPRESSION;
static int framenum = 0;
struct pngdata {