diff --git a/test/ZFontTest.cpp b/test/ZFontTest.cpp
index 57293d3..0891a96 100644
--- a/test/ZFontTest.cpp
+++ b/test/ZFontTest.cpp
@@ -69,7 +69,7 @@ void Test()
         //draw the images//
         for(int i=0; i <= 4; i++)
             text[i].Draw(10.0f*i,50.0f*i);
-        engine->UpdateScreen();    //update the screen
+        engine->Update();    //update the screen
 
     } while(!engine->QuitRequested());    //quit only when engine has encountered a quit request
 }
diff --git a/test/ZImageTest.cpp b/test/ZImageTest.cpp
index 6361303..57d7b34 100644
--- a/test/ZImageTest.cpp
+++ b/test/ZImageTest.cpp
@@ -73,7 +73,7 @@ void Test()
 
         image3.Draw(200,0);
         textImage.Draw(0,100);
-        engine->UpdateScreen();    //update the screen
+        engine->Update();    //update the screen
 
     } while(!engine->QuitRequested());    //quit only when engine has encountered a quit request
 }
diff --git a/test/ZMouseTest.cpp b/test/ZMouseTest.cpp
index 18c0dce..6c608d0 100644
--- a/test/ZMouseTest.cpp
+++ b/test/ZMouseTest.cpp
@@ -79,7 +79,7 @@ void Test()
         text[2].Draw(0,0);
         cursor.Draw(engine->MouseX()-8.0f,engine->MouseY()-8.0f);
 
-        engine->UpdateScreen();    //update the screen
+        engine->Update();    //update the screen
 
     } while(!engine->QuitRequested());    //quit only when engine has encountered a quit request
 }
diff --git a/test/ZMusicTest.cpp b/test/ZMusicTest.cpp
index a9a7ff7..0cf646f 100644
--- a/test/ZMusicTest.cpp
+++ b/test/ZMusicTest.cpp
@@ -45,7 +45,7 @@ void Test()
         engine->CreateDisplay("ZMusic Test");
         font.DrawText("Music.ogg does not exist, please read music.txt.",text[0]);
         text[0].Draw(0,0);
-        engine->UpdateScreen();
+        engine->Update();
         do
         {
             engine->CheckEvents();
@@ -93,7 +93,7 @@ void Test()
             engine->Clear();    //clear screen
             for(int i=0; i < 4; i++)
                 text[i].Draw(0,i*50.0f);
-            engine->UpdateScreen();    //update the screen
+            engine->Update();    //update the screen
         } while(!engine->QuitRequested());    //quit only when engine has encountered a quit request
     }
 }
diff --git a/test/ZRectTest.cpp b/test/ZRectTest.cpp
index adc1ca2..c6bb857 100644
--- a/test/ZRectTest.cpp
+++ b/test/ZRectTest.cpp
@@ -74,7 +74,7 @@ void Test()
         moveRect.Draw(255,0,0,128);
         stillRect.Draw(0,0,255,128);
         moveRect.Intersection(stillRect).Draw(0,255,0);
-        engine->UpdateScreen();
+        engine->Update();
 
     } while(!engine->QuitRequested());
 }
diff --git a/test/ZSoundTest.cpp b/test/ZSoundTest.cpp
index 7b8b861..4011493 100644
--- a/test/ZSoundTest.cpp
+++ b/test/ZSoundTest.cpp
@@ -92,7 +92,7 @@ void Test()
         engine->Clear();    //clear screen
         for(int i=0; i < 6; i++)
             text[i].Draw(0,i*50.0f);
-        engine->UpdateScreen();    //update the screen
+        engine->Update();    //update the screen
 
     } while(!engine->QuitRequested());    //quit only when engine has encountered a quit request
 }
diff --git a/test/ZTimerTest.cpp b/test/ZTimerTest.cpp
index 6701d02..23b853b 100644
--- a/test/ZTimerTest.cpp
+++ b/test/ZTimerTest.cpp
@@ -109,7 +109,7 @@ void Test()
         for(int i=0; i <= 4; i++)
             text[i].Draw(0,i*50.0f);
         
-        engine->UpdateScreen();    //update the screen
+        engine->Update();    //update the screen
 
     } while(!engine->QuitRequested());    //quit only when engine has encountered a quit request
 }