diff --git a/libnetwork/ipams/drivers_windows.go b/libnetwork/ipams/drivers.go
similarity index 96%
rename from libnetwork/ipams/drivers_windows.go
rename to libnetwork/ipams/drivers.go
index 7fc3c8ee09..b65ea7701a 100644
--- a/libnetwork/ipams/drivers_windows.go
+++ b/libnetwork/ipams/drivers.go
@@ -1,5 +1,3 @@
-//go:build windows
-
 package ipams
 
 import (
diff --git a/libnetwork/ipams/drivers_unix.go b/libnetwork/ipams/drivers_unix.go
deleted file mode 100644
index a3ab1e18f1..0000000000
--- a/libnetwork/ipams/drivers_unix.go
+++ /dev/null
@@ -1,14 +0,0 @@
-//go:build linux || freebsd || darwin
-
-package ipams
-
-import (
-	"github.com/docker/docker/libnetwork/ipamapi"
-	"github.com/docker/docker/libnetwork/ipams/defaultipam"
-	"github.com/docker/docker/libnetwork/ipamutils"
-)
-
-// Register registers the built-in ipam service with libnetwork.
-func Register(r ipamapi.Registerer, addressPools []*ipamutils.NetworkToSplit) error {
-	return defaultipam.Register(r, addressPools)
-}
diff --git a/libnetwork/ipams/windowsipam/windowsipam.go b/libnetwork/ipams/windowsipam/windowsipam.go
index 498b34bb2f..5e4ad2225d 100644
--- a/libnetwork/ipams/windowsipam/windowsipam.go
+++ b/libnetwork/ipams/windowsipam/windowsipam.go
@@ -1,3 +1,5 @@
+//go:build windows
+
 package windowsipam
 
 import (
diff --git a/libnetwork/ipams/windowsipam/windowsipam_other.go b/libnetwork/ipams/windowsipam/windowsipam_other.go
new file mode 100644
index 0000000000..777cf1d0fd
--- /dev/null
+++ b/libnetwork/ipams/windowsipam/windowsipam_other.go
@@ -0,0 +1,10 @@
+//go:build !windows
+
+package windowsipam
+
+import "github.com/docker/docker/libnetwork/ipamapi"
+
+// Register is a no-op -- windowsipam is only supported on Windows.
+func Register(_ ipamapi.Registerer) error {
+	return nil
+}
diff --git a/libnetwork/ipams/windowsipam/windowsipam_test.go b/libnetwork/ipams/windowsipam/windowsipam_test.go
index 3b57a657bf..f9abb7fe9f 100644
--- a/libnetwork/ipams/windowsipam/windowsipam_test.go
+++ b/libnetwork/ipams/windowsipam/windowsipam_test.go
@@ -1,3 +1,5 @@
+//go:build windows
+
 package windowsipam
 
 import (