diff --git a/contrib/libpcap/pcap/bpf.h b/contrib/libpcap/pcap/bpf.h
index 78ad8905d02..1a63d603008 100644
--- a/contrib/libpcap/pcap/bpf.h
+++ b/contrib/libpcap/pcap/bpf.h
@@ -15,11 +15,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *      This product includes software developed by the University of
- *      California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
diff --git a/contrib/libpcap/pcap/dlt.h b/contrib/libpcap/pcap/dlt.h
index 2d74713e8ab..b88303c149e 100644
--- a/contrib/libpcap/pcap/dlt.h
+++ b/contrib/libpcap/pcap/dlt.h
@@ -15,11 +15,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *      This product includes software developed by the University of
- *      California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
diff --git a/sys/net/dlt.h b/sys/net/dlt.h
index ee6c32bb158..dc818521d66 100644
--- a/sys/net/dlt.h
+++ b/sys/net/dlt.h
@@ -15,11 +15,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *      This product includes software developed by the University of
- *      California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *