diff --git a/plugins/inputs/modbus/configuration.go b/plugins/inputs/modbus/configuration.go
index 8f85cf14a..552cc3ff6 100644
--- a/plugins/inputs/modbus/configuration.go
+++ b/plugins/inputs/modbus/configuration.go
@@ -1,4 +1,5 @@
 //go:build !openbsd
+// +build !openbsd
 
 package modbus
 
diff --git a/plugins/inputs/modbus/configuration_register.go b/plugins/inputs/modbus/configuration_register.go
index edb6548ac..2e1ad34a6 100644
--- a/plugins/inputs/modbus/configuration_register.go
+++ b/plugins/inputs/modbus/configuration_register.go
@@ -1,4 +1,5 @@
 //go:build !openbsd
+// +build !openbsd
 
 package modbus
 
diff --git a/plugins/inputs/modbus/configuration_request.go b/plugins/inputs/modbus/configuration_request.go
index d64b53a82..a11846062 100644
--- a/plugins/inputs/modbus/configuration_request.go
+++ b/plugins/inputs/modbus/configuration_request.go
@@ -1,3 +1,6 @@
+//go:build !openbsd
+// +build !openbsd
+
 package modbus
 
 import (
diff --git a/plugins/inputs/modbus/modbus.go b/plugins/inputs/modbus/modbus.go
index 535c5e921..beb6fd001 100644
--- a/plugins/inputs/modbus/modbus.go
+++ b/plugins/inputs/modbus/modbus.go
@@ -1,4 +1,5 @@
 //go:build !openbsd
+// +build !openbsd
 
 package modbus
 
diff --git a/plugins/inputs/modbus/modbus_openbsd.go b/plugins/inputs/modbus/modbus_openbsd.go
index 6cc2bfeb3..c4df661df 100644
--- a/plugins/inputs/modbus/modbus_openbsd.go
+++ b/plugins/inputs/modbus/modbus_openbsd.go
@@ -1,3 +1,4 @@
 //go:build openbsd
+// +build openbsd
 
 package modbus
diff --git a/plugins/inputs/modbus/modbus_test.go b/plugins/inputs/modbus/modbus_test.go
index fe155a996..e35b8bdbe 100644
--- a/plugins/inputs/modbus/modbus_test.go
+++ b/plugins/inputs/modbus/modbus_test.go
@@ -1,4 +1,5 @@
 //go:build !openbsd
+// +build !openbsd
 
 package modbus
 
diff --git a/plugins/inputs/modbus/request.go b/plugins/inputs/modbus/request.go
index 77fa39214..3d5a98143 100644
--- a/plugins/inputs/modbus/request.go
+++ b/plugins/inputs/modbus/request.go
@@ -1,4 +1,5 @@
 //go:build !openbsd
+// +build !openbsd
 
 package modbus
 
diff --git a/plugins/inputs/modbus/type_conversions.go b/plugins/inputs/modbus/type_conversions.go
index 88c4b7465..55acdfecf 100644
--- a/plugins/inputs/modbus/type_conversions.go
+++ b/plugins/inputs/modbus/type_conversions.go
@@ -1,4 +1,5 @@
 //go:build !openbsd
+// +build !openbsd
 
 package modbus
 
diff --git a/plugins/inputs/modbus/type_conversions16.go b/plugins/inputs/modbus/type_conversions16.go
index 8fc920d21..5931fc689 100644
--- a/plugins/inputs/modbus/type_conversions16.go
+++ b/plugins/inputs/modbus/type_conversions16.go
@@ -1,4 +1,5 @@
 //go:build !openbsd
+// +build !openbsd
 
 package modbus
 
diff --git a/plugins/inputs/modbus/type_conversions32.go b/plugins/inputs/modbus/type_conversions32.go
index 260a3dc06..80f7ee6a0 100644
--- a/plugins/inputs/modbus/type_conversions32.go
+++ b/plugins/inputs/modbus/type_conversions32.go
@@ -1,4 +1,5 @@
 //go:build !openbsd
+// +build !openbsd
 
 package modbus
 
diff --git a/plugins/inputs/modbus/type_conversions64.go b/plugins/inputs/modbus/type_conversions64.go
index 55b0a0775..feef4112b 100644
--- a/plugins/inputs/modbus/type_conversions64.go
+++ b/plugins/inputs/modbus/type_conversions64.go
@@ -1,4 +1,5 @@
 //go:build !openbsd
+// +build !openbsd
 
 package modbus