diff --git a/src/common/emu_window.cpp b/src/common/emu_window.cpp
index b69b05cb9..dd42758f0 100644
--- a/src/common/emu_window.cpp
+++ b/src/common/emu_window.cpp
@@ -124,3 +124,8 @@ EmuWindow::FramebufferLayout EmuWindow::FramebufferLayout::DefaultScreenLayout(u
 
     return res;
 }
+
+void EmuWindow::OnMinimalClientAreaChangeRequest(const std::pair<unsigned,unsigned>& minimal_size) {
+    // By default, ignore this request and do nothing.
+    (void)minimal_size;
+}
diff --git a/src/common/emu_window.h b/src/common/emu_window.h
index a0ae4c9fa..1d82973fb 100644
--- a/src/common/emu_window.h
+++ b/src/common/emu_window.h
@@ -195,9 +195,7 @@ private:
      * Handler called when the minimal client area was requested to be changed via SetConfig.
      * For the request to be honored, EmuWindow implementations will usually reimplement this function.
      */
-    virtual void OnMinimalClientAreaChangeRequest(const std::pair<unsigned,unsigned>& minimal_size) {
-        // By default, ignore this request and do nothing.
-    }
+    virtual void OnMinimalClientAreaChangeRequest(const std::pair<unsigned,unsigned>& minimal_size);
 
     FramebufferLayout framebuffer_layout; ///< Current framebuffer layout