diff --git a/Source/dx.h b/Source/dx.h
index f91206209..9e701ed8d 100644
--- a/Source/dx.h
+++ b/Source/dx.h
@@ -13,9 +13,6 @@ extern "C" {
 #endif
 
 extern BYTE *gpBuffer;
-extern char gbBackBuf;
-extern char gbEmulate;
-extern HMODULE ghDiabMod;
 
 void dx_init(HWND hWnd);
 void lock_buf(BYTE idx);
diff --git a/SourceX/dx.cpp b/SourceX/dx.cpp
index feb30c120..994f684f5 100644
--- a/SourceX/dx.cpp
+++ b/SourceX/dx.cpp
@@ -16,7 +16,6 @@ BYTE *gpBuffer;
 int locktbl[256];
 #endif
 static CCritSect sgMemCrit;
-HMODULE ghDiabMod;
 
 int refreshDelay;
 SDL_Renderer *renderer;