diff --git a/escher/include/escher/view_controller.h b/escher/include/escher/view_controller.h
index 6084edc39..cb37c788f 100644
--- a/escher/include/escher/view_controller.h
+++ b/escher/include/escher/view_controller.h
@@ -44,12 +44,12 @@ public:
     /* With WantsMaximumSpace, no stack headers are displayed. */
   };
 
-  ViewController(Responder * parentResponder);
-  virtual const char * title();
+  ViewController(Responder * parentResponder) : Responder(parentResponder) {}
+  virtual const char * title() { return nullptr; }
   virtual View * view() = 0;
   virtual void initView() {}
   virtual void viewWillAppear();
-  virtual void viewDidDisappear();
+  virtual void viewDidDisappear() {}
   virtual DisplayParameter displayParameter() { return DisplayParameter::Default; }
 };
 
diff --git a/escher/src/view_controller.cpp b/escher/src/view_controller.cpp
index c65d56d5e..01d167c7c 100644
--- a/escher/src/view_controller.cpp
+++ b/escher/src/view_controller.cpp
@@ -1,17 +1,4 @@
 #include <escher/view_controller.h>
 
-ViewController::ViewController(Responder * parentResponder) :
-  Responder(parentResponder)
-{
-}
-
-const char * ViewController::title() {
-  return nullptr;
-}
-
 void ViewController::viewWillAppear() {
 }
-
-void ViewController::viewDidDisappear() {
-}
-