diff --git a/lib/libcrypt/crypt.3 b/lib/libcrypt/crypt.3
index 41c36c32ca95..8fc6da25d279 100644
--- a/lib/libcrypt/crypt.3
+++ b/lib/libcrypt/crypt.3
@@ -38,6 +38,7 @@
 .Nm crypt
 .Nd Trapdoor encryption
 .Sh SYNOPSIS
+.Fd #include <unistd.h>
 .Ft char *
 .Fn crypt "const char *key" "const char *salt"
 .Sh DESCRIPTION
diff --git a/lib/libipsec/ipsec_set_policy.3 b/lib/libipsec/ipsec_set_policy.3
index 559d5fa1d60b..3c3d45c4c452 100644
--- a/lib/libipsec/ipsec_set_policy.3
+++ b/lib/libipsec/ipsec_set_policy.3
@@ -39,6 +39,7 @@
 .Nd manipulate IPsec policy specification structure from readable string
 .\"
 .Sh SYNOPSIS
+.Fd #include <sys/types.h>
 .Fd #include <netinet6/ipsec.h>
 .Ft "char *"
 .Fn ipsec_set_policy "char *policy" "int len"