diff --git a/abstract_client.h b/abstract_client.h
--- a/abstract_client.h
+++ b/abstract_client.h
@@ -544,7 +544,7 @@
      * Returns whether the window is maximizable or not.
      */
     virtual bool isMaximizable() const = 0;
-    virtual bool isMinimizable() const = 0;
+    virtual bool isMinimizable() const;
     virtual QRect iconGeometry() const;
     virtual bool userCanSetFullScreen() const;
     virtual bool userCanSetNoBorder() const = 0;
diff --git a/abstract_client.cpp b/abstract_client.cpp
--- a/abstract_client.cpp
+++ b/abstract_client.cpp
@@ -3162,4 +3162,14 @@
     Q_UNUSED(user)
 }
 
+/**
+ * Returns @c true if the AbstractClient can be minimized; otherwise @c false.
+ *
+ * Default implementation returns @c false.
+ */
+bool AbstractClient::isMinimizable() const
+{
+    return false;
+}
+
 }
diff --git a/internal_client.h b/internal_client.h
--- a/internal_client.h
+++ b/internal_client.h
@@ -54,7 +54,6 @@
     void closeWindow() override;
     bool isCloseable() const override;
     bool isMaximizable() const override;
-    bool isMinimizable() const override;
     bool isMovable() const override;
     bool isMovableAcrossScreens() const override;
     bool isResizable() const override;
diff --git a/internal_client.cpp b/internal_client.cpp
--- a/internal_client.cpp
+++ b/internal_client.cpp
@@ -213,11 +213,6 @@
     return false;
 }
 
-bool InternalClient::isMinimizable() const
-{
-    return false;
-}
-
 bool InternalClient::isMovable() const
 {
     return true;