diff --git a/opcommon.go b/opcommon.go
index 6f52e27..ccbab77 100644
--- a/opcommon.go
+++ b/opcommon.go
@@ -1,3 +1,5 @@
+//go:build !freebsd
+
 package keyring
 
 import (
diff --git a/opconnect.go b/opconnect.go
index 5a7814a..9548436 100644
--- a/opconnect.go
+++ b/opconnect.go
@@ -1,3 +1,5 @@
+//go:build !freebsd
+
 package keyring
 
 import (
diff --git a/opdesktop.go b/opdesktop.go
index 38e4fcd..33dfd55 100644
--- a/opdesktop.go
+++ b/opdesktop.go
@@ -1,3 +1,5 @@
+//go:build !freebsd
+
 package keyring
 
 import (
diff --git a/opsrvaccount.go b/opsrvaccount.go
index 7ac686c..de2b48c 100644
--- a/opsrvaccount.go
+++ b/opsrvaccount.go
@@ -1,3 +1,5 @@
+//go:build !freebsd
+
 package keyring
 
 import (
diff --git a/opstandard.go b/opstandard.go
index 8d8da99..72d392a 100644
--- a/opstandard.go
+++ b/opstandard.go
@@ -1,3 +1,5 @@
+//go:build !freebsd
+
 package keyring
 
 import (