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-rw-r--r--print-stp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/print-stp.c b/print-stp.c
index a89932d6..d3879615 100644
--- a/print-stp.c
+++ b/print-stp.c
@@ -368,7 +368,7 @@ stp_print(netdissect_options *ndo, const u_char *p, u_int length)
u_int mstp_len;
u_int spb_len;
- stp_bpdu = (struct stp_bpdu_*)p;
+ stp_bpdu = (const struct stp_bpdu_*)p;
/* Minimum STP Frame size. */
if (length < 4)