diff --git a/Source/Core/Core/AchievementManager.h b/Source/Core/Core/AchievementManager.h
index efdf92d9ad..b4ec5f8195 100644
--- a/Source/Core/Core/AchievementManager.h
+++ b/Source/Core/Core/AchievementManager.h
@@ -275,21 +275,21 @@ private:
 
 #include <string>
 
-namespace Gecko
-{
-  class GeckoCode;
-}  // namespace Gecko
-
 namespace ActionReplay
 {
-  struct ARCode;
-}  // namespace ActionReplay
+struct ARCode;
+}
 
 namespace DiscIO
 {
 class Volume;
 }
 
+namespace Gecko
+{
+class GeckoCode;
+}
+
 class AchievementManager
 {
 public: