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-rw-r--r--contrib/pngminus/png2pnm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/contrib/pngminus/png2pnm.c b/contrib/pngminus/png2pnm.c
index 010870a76..ac295aafa 100644
--- a/contrib/pngminus/png2pnm.c
+++ b/contrib/pngminus/png2pnm.c
@@ -211,7 +211,7 @@ BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file, BOOL raw, BOOL a
if (ret != 8)
return FALSE;
- ret = png_check_sig (buf, 8);
+ ret = !png_sig_cmp (buf, 0, 8);
if (!ret)
return FALSE;