diff --git a/abstract_client.h b/abstract_client.h
index 3fc66fbd59..ba57f680f5 100644
--- a/abstract_client.h
+++ b/abstract_client.h
@@ -397,6 +397,13 @@ public:
     void keepInArea(QRect area, bool partial = false);
     virtual QSize minSize() const;
     virtual QSize maxSize() const;
+    /// How to resize the window in order to obey constains (mainly aspect ratios)
+    enum Sizemode {
+        SizemodeAny,
+        SizemodeFixedW, ///< Try not to affect width
+        SizemodeFixedH, ///< Try not to affect height
+        SizemodeMax ///< Try not to make it larger in either direction
+    };
 
     virtual bool hasStrut() const;
 
diff --git a/client.h b/client.h
index 4efcf7d40d..451e5157e1 100644
--- a/client.h
+++ b/client.h
@@ -209,13 +209,6 @@ public:
     void releaseWindow(bool on_shutdown = false);
     void destroyClient();
 
-    /// How to resize the window in order to obey constains (mainly aspect ratios)
-    enum Sizemode {
-        SizemodeAny,
-        SizemodeFixedW, ///< Try not to affect width
-        SizemodeFixedH, ///< Try not to affect height
-        SizemodeMax ///< Try not to make it larger in either direction
-    };
     QSize adjustedSize(const QSize&, Sizemode mode = SizemodeAny) const;
     QSize adjustedSize() const;