diff --git a/sys/net/bpf_buffer.c b/sys/net/bpf_buffer.c
index 6920c70c7189..d338fca60e9e 100644
--- a/sys/net/bpf_buffer.c
+++ b/sys/net/bpf_buffer.c
@@ -2,7 +2,7 @@
  * Copyright (c) 2007 Seccuris Inc.
  * All rights reserved.
  *
- * This sofware was developed by Robert N. M. Watson under contract to
+ * This software was developed by Robert N. M. Watson under contract to
  * Seccuris Inc.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/net/bpf_buffer.h b/sys/net/bpf_buffer.h
index 82d0310b4d44..733137fe1625 100644
--- a/sys/net/bpf_buffer.h
+++ b/sys/net/bpf_buffer.h
@@ -2,7 +2,7 @@
  * Copyright (c) 2007 Seccuris Inc.
  * All rights reserved.
  *
- * This sofware was developed by Robert N. M. Watson under contract to
+ * This software was developed by Robert N. M. Watson under contract to
  * Seccuris Inc.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/net/bpf_zerocopy.c b/sys/net/bpf_zerocopy.c
index 7a3e6cd5fd9d..1b3262906263 100644
--- a/sys/net/bpf_zerocopy.c
+++ b/sys/net/bpf_zerocopy.c
@@ -2,7 +2,7 @@
  * Copyright (c) 2007 Seccuris Inc.
  * All rights reserved.
  *
- * This sofware was developed by Robert N. M. Watson under contract to
+ * This software was developed by Robert N. M. Watson under contract to
  * Seccuris Inc.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/net/bpf_zerocopy.h b/sys/net/bpf_zerocopy.h
index c541a15d1399..a5709b86cbbb 100644
--- a/sys/net/bpf_zerocopy.h
+++ b/sys/net/bpf_zerocopy.h
@@ -2,7 +2,7 @@
  * Copyright (c) 2007 Seccuris Inc.
  * All rights reserved.
  *
- * This sofware was developed by Robert N. M. Watson under contract to
+ * This software was developed by Robert N. M. Watson under contract to
  * Seccuris Inc.
  *
  * Redistribution and use in source and binary forms, with or without