diff --git a/internal/async/goroutine.go b/internal/async/goroutine.go
index 7b699f67b6..08a42b65e2 100644
--- a/internal/async/goroutine.go
+++ b/internal/async/goroutine.go
@@ -1,5 +1,9 @@
 package async
 
+// mainGoroutineID stores the main goroutine ID.
+// This ID must be initialized in main.init because
+// a main goroutine may not equal to 1 due to the
+// influence of a garbage collector.
 var mainGoroutineID uint64
 
 func init() {
diff --git a/internal/driver/glfw/driver.go b/internal/driver/glfw/driver.go
index 2cfba1e9c4..3fd6a214d6 100644
--- a/internal/driver/glfw/driver.go
+++ b/internal/driver/glfw/driver.go
@@ -22,12 +22,6 @@ import (
 	"fyne.io/fyne/v2/storage/repository"
 )
 
-// mainGoroutineID stores the main goroutine ID.
-// This ID must be initialized in main.init because
-// a main goroutine may not equal to 1 due to the
-// influence of a garbage collector.
-var mainGoroutineID uint64
-
 var curWindow *window
 
 // Declare conformity with Driver