diff --git a/projects/mtg/include/CardEffect.h b/projects/mtg/include/CardEffect.h
index d84429e6e..3592406a0 100644
--- a/projects/mtg/include/CardEffect.h
+++ b/projects/mtg/include/CardEffect.h
@@ -4,7 +4,7 @@
 #include <JGE.h>
 #include "Effects.h"
 
-class CardGui;
+struct CardGui;
 
 class CardEffect : public Effect
 {
diff --git a/projects/mtg/include/GameObserver.h b/projects/mtg/include/GameObserver.h
index 52478c76c..b9c52770c 100644
--- a/projects/mtg/include/GameObserver.h
+++ b/projects/mtg/include/GameObserver.h
@@ -15,7 +15,7 @@
 class MTGGamePhase;
 class MTGAbility;
 class MTGCardInstance;
-class CardGui;
+struct CardGui;
 class Player;
 class TargetChooser;
 
diff --git a/projects/mtg/include/MTGGuiPlay.h b/projects/mtg/include/MTGGuiPlay.h
index 82b41164e..6673b410f 100644
--- a/projects/mtg/include/MTGGuiPlay.h
+++ b/projects/mtg/include/MTGGuiPlay.h
@@ -8,7 +8,7 @@
 
 class Player;
 class GameObserver;
-class CardGui;
+struct CardGui;
 
 class MTGGuiPlay: public PlayGuiObjectController {
  protected:
diff --git a/projects/mtg/src/GuiFrame.cpp b/projects/mtg/src/GuiFrame.cpp
index 7c99e5584..102e5515d 100644
--- a/projects/mtg/src/GuiFrame.cpp
+++ b/projects/mtg/src/GuiFrame.cpp
@@ -51,7 +51,7 @@ void GuiFrame::Render()
   renderer->RenderQuad(gold1, -sized, 16);
   renderer->RenderQuad(gold1, -sized + 479, 16);
 
-  goldGlow->SetColor(ARGB(100+(random()%50), 255, 255, 255));
+  goldGlow->SetColor(ARGB(100+(rand()%50), 255, 255, 255));
   renderer->RenderQuad(goldGlow, -sized, 9);
   renderer->RenderQuad(goldGlow, -sized + 480, 9);