diff --git a/print-stp.c b/print-stp.c
index a59b22fb..0327ba49 100644
--- a/print-stp.c
+++ b/print-stp.c
@@ -509,5 +509,5 @@ stp_print(netdissect_options *ndo, const u_char *p, u_int length)
 
     return;
 trunc:
-    ND_PRINT("[|stp %u]", length);
+    nd_print_trunc(ndo);
 }
diff --git a/tests/stp-heapoverflow-1.out b/tests/stp-heapoverflow-1.out
index 4229c39e..f7cd158a 100644
--- a/tests/stp-heapoverflow-1.out
+++ b/tests/stp-heapoverflow-1.out
@@ -24,4 +24,4 @@
 	0x0000:  3030 3030 30                             00000
 30:30:30:30:30:30 > 30:30:30:30:30:30, ethertype Unknown (0x3030), length 262144: 
 	0x0000:  3030 3030 30                             00000
-[|stp 262127]
+ [|stp]
diff --git a/tests/stp-heapoverflow-2.out b/tests/stp-heapoverflow-2.out
index 2e2d5daa..a9b3be41 100644
--- a/tests/stp-heapoverflow-2.out
+++ b/tests/stp-heapoverflow-2.out
@@ -24,4 +24,4 @@
 	0x0000:  3030 3030 3030                           000000
 30:30:30:30:30:30 > 30:30:30:30:30:30, ethertype Unknown (0x3030), length 262144: 
 	0x0000:  3030 3030 3030                           000000
-STP 802.1d[|stp 262127]
+STP 802.1d [|stp]
diff --git a/tests/stp-heapoverflow-3.out b/tests/stp-heapoverflow-3.out
index 08928e61..4f2c28c6 100644
--- a/tests/stp-heapoverflow-3.out
+++ b/tests/stp-heapoverflow-3.out
@@ -24,4 +24,4 @@
 	0x0000:  3030 30                                  000
 30:30:30:30:30:30 > 30:30:30:30:30:30, ethertype Unknown (0x3030), length 262144: 
 	0x0000:  3030 30                                  000
-[|stp 262127]
+ [|stp]
diff --git a/tests/stp-heapoverflow-4.out b/tests/stp-heapoverflow-4.out
index e9888425..ffc3ce1f 100644
--- a/tests/stp-heapoverflow-4.out
+++ b/tests/stp-heapoverflow-4.out
@@ -24,4 +24,4 @@
 	0x0000:  3030 3030 3030 3030                      00000000
 30:30:30:30:30:30 > 30:30:30:30:30:30, ethertype Unknown (0x3030), length 262144: 
 	0x0000:  3030 3030 3030 3030                      00000000
-STP 802.1d, Config, Flags [Learn, Forward][|stp 262127]
+STP 802.1d, Config, Flags [Learn, Forward] [|stp]
diff --git a/tests/stp-v4-length-sigsegv.out b/tests/stp-v4-length-sigsegv.out
index fafddb09..089f5f3e 100644
--- a/tests/stp-v4-length-sigsegv.out
+++ b/tests/stp-v4-length-sigsegv.out
@@ -1 +1 @@
-STP 802.1aq, Rapid STP, CIST Flags [Learn, Forward], length 262127[|stp 262127]
+STP 802.1aq, Rapid STP, CIST Flags [Learn, Forward], length 262127 [|stp]