diff --git a/plugins/Flanger/FlangerEffect.cpp b/plugins/Flanger/FlangerEffect.cpp
index 562badc0a..9f7200f0e 100644
--- a/plugins/Flanger/FlangerEffect.cpp
+++ b/plugins/Flanger/FlangerEffect.cpp
@@ -24,6 +24,9 @@
 
 #include "FlangerEffect.h"
 #include "Engine.h"
+#include "MonoDelay.h"
+#include "Noise.h"
+#include "QuadratureLfo.h"
 
 #include "embed.h"
 #include "plugin_export.h"
diff --git a/plugins/Flanger/FlangerEffect.h b/plugins/Flanger/FlangerEffect.h
index 45dd5cafd..8428d89a3 100644
--- a/plugins/Flanger/FlangerEffect.h
+++ b/plugins/Flanger/FlangerEffect.h
@@ -28,17 +28,14 @@
 
 #include "Effect.h"
 #include "FlangerControls.h"
-#include "MonoDelay.h"
-#include "Noise.h"
-#include "QuadratureLfo.h"
+
+namespace lmms
+{
 
 class MonoDelay;
 class Noise;
 class QuadratureLfo;
 
-namespace lmms
-{
-
 
 class FlangerEffect : public Effect
 {