diff --git a/spec.go b/spec.go
index 2100cca39..ee360bf0c 100644
--- a/spec.go
+++ b/spec.go
@@ -55,6 +55,16 @@ type Process struct {
 	Cwd string `json:"cwd"`
 }
 
+// User specifies user and group information for the container's main process
+type User struct {
+	// Uid is the user id
+	UID int32 `json:"uid"`
+	// Gid is the group id
+	GID int32 `json:"gid"`
+	// AdditionalGids are additional group ids set for the container's process
+	AdditionalGids []int32 `json:"additionalGids"`
+}
+
 // Root contains information about the container's root filesystem on the host.
 type Root struct {
 	// Path is the absolute path to the container's root filesystem.
diff --git a/spec_linux.go b/spec_linux.go
index 3c82db4b4..4ab4b18a7 100644
--- a/spec_linux.go
+++ b/spec_linux.go
@@ -32,17 +32,6 @@ type Linux struct {
 	RootfsPropagation string `json:"rootfsPropagation"`
 }
 
-// User specifies Linux specific user and group information for the container's
-// main process
-type User struct {
-	// Uid is the user id
-	UID int32 `json:"uid"`
-	// Gid is the group id
-	GID int32 `json:"gid"`
-	// AdditionalGids are additional group ids set for the container's process
-	AdditionalGids []int32 `json:"additionalGids"`
-}
-
 // Namespace is the configuration for a Linux namespace
 type Namespace struct {
 	// Type is the type of Linux namespace