diff --git a/projects/mtg/include/CardGui.h b/projects/mtg/include/CardGui.h
index 763ccce90..56117d496 100644
--- a/projects/mtg/include/CardGui.h
+++ b/projects/mtg/include/CardGui.h
@@ -17,10 +17,10 @@ struct CardGui : public PlayGuiObject {
   JQuad* quad;
 
  public:
-  static const float Width = 28.0;
-  static const float Height = 40.0;
-  static const float BigWidth = 200.0;
-  static const float BigHeight = 285.0;
+  static const float Width;
+  static const float Height;
+  static const float BigWidth;
+  static const float BigHeight;
 
   MTGCardInstance* card;
   CardGui(MTGCardInstance* card, float x, float y);
diff --git a/projects/mtg/src/CardGui.cpp b/projects/mtg/src/CardGui.cpp
index eed602748..e38b7f169 100644
--- a/projects/mtg/src/CardGui.cpp
+++ b/projects/mtg/src/CardGui.cpp
@@ -7,6 +7,12 @@
 #include "../include/MTGDefinitions.h"
 #include <Vector2D.h>
 
+
+const float CardGui::Width = 28.0;
+const float CardGui::Height = 40.0;
+const float CardGui::BigWidth = 200.0;
+const float CardGui::BigHeight = 285.0;
+
 CardGui::CardGui(MTGCardInstance* card, float x, float y) : PlayGuiObject(Height, x, y, false), quad(cache.getQuad(card)), card(card) {}
 CardGui::CardGui(MTGCardInstance* card, const Pos& ref) : PlayGuiObject(Height, ref, false), quad(cache.getQuad(card)), card(card) {}