diff --git a/epan/dissectors/packet-ansi_a.c b/epan/dissectors/packet-ansi_a.c
index a20c270499..a01accf356 100644
--- a/epan/dissectors/packet-ansi_a.c
+++ b/epan/dissectors/packet-ansi_a.c
@@ -10971,7 +10971,7 @@ dissect_dtap_common(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gboolea
     static ansi_a_tap_rec_t     tap_rec[16];
     static ansi_a_tap_rec_t     *tap_p;
     static int                  tap_current = 0;
-    guint8                      oct, oct_1;
+    guint8                      oct, oct_1=0;
     guint32                     offset, saved_offset;
     guint32                     len;
     gint                        dec_idx;