diff --git a/code/cgame/cg_lua.h b/code/cgame/cg_lua.h
index b6c58c1..54a8c65 100644
--- a/code/cgame/cg_lua.h
+++ b/code/cgame/cg_lua.h
@@ -3,6 +3,9 @@
 
 #include "cg_local.h"
 
+#ifndef CG_LUA_H_
+#define CG_LUA_H_
+
 #if (defined __linux__ || defined __WIN32__) // linux or mingw
 #include "../game/lua.h"
 #include "../game/lauxlib.h"
@@ -96,4 +99,6 @@ int32_t			Luaopen_Rent(lua_State *L);
 void		Lua_PushRent(lua_State *L, refEntity_t *rent);
 rent_t		*Lua_GetRent(lua_State *L, int32_t argNum);
 
+#endif /* CG_LUA_H_ */
+
 #endif
diff --git a/code/cgame/cg_screenfx.h b/code/cgame/cg_screenfx.h
index caa7ca3..7d11c2a 100644
--- a/code/cgame/cg_screenfx.h
+++ b/code/cgame/cg_screenfx.h
@@ -2,6 +2,9 @@
 // full-screen effects like beaming in/out, static from being hit, etc.
 //
 
+#ifndef CG_SCREENFX_H_
+#define CG_SCREENFX_H_
+
 enum screenfx_e
 {
 	SCREENFX_HIT,
@@ -26,3 +29,6 @@ void CG_AddFullScreenEffect(int32_t screenfx, int32_t clientNum);
 
 void CG_DrawFullScreenFX(void);
 
+#endif /* CG_SCREENFX_H_ */
+
+
diff --git a/code/cgame/fx_local.h b/code/cgame/fx_local.h
index 7d697e9..51225de 100644
--- a/code/cgame/fx_local.h
+++ b/code/cgame/fx_local.h
@@ -1,4 +1,7 @@
 
+#ifndef FX_LOCAL_H_
+#define FX_LOCAL_H_
+
 #define DEFAULT_DEVIATION	0.5
 
 /*
@@ -178,3 +181,4 @@ void FX_qFlash( centity_t* cent, vec3_t org, int32_t timeIndex );
  */
 void fxRandCircumferencePos(vec3_t center, vec3_t normal, float radius, vec3_t out);
 
+#endif /* FX_LOCAL_H_ */
diff --git a/code/game/bg_local.h b/code/game/bg_local.h
index b4a8d01..47a19a5 100644
--- a/code/game/bg_local.h
+++ b/code/game/bg_local.h
@@ -2,6 +2,9 @@
 //
 // bg_local.h -- local definitions for the bg (both games) files
 
+#ifndef BG_LOCAL_H_
+#define BG_LOCAL_H_
+
 #define	MIN_WALK_NORMAL	0.7		// can't walk on very steep slopes
 
 #define	STEPSIZE		18
@@ -46,5 +49,7 @@ void PM_AddEvent( int newEvent );
 qboolean	PM_SlideMove( qboolean gravity );
 void		PM_StepSlideMove( qboolean gravity );
 
+#endif /* BG_LOCAL_H_ */
+
 
 
diff --git a/code/game/surfaceflags.h b/code/game/surfaceflags.h
index b9608f3..e3f6370 100644
--- a/code/game/surfaceflags.h
+++ b/code/game/surfaceflags.h
@@ -7,6 +7,9 @@
 
 // these definitions also need to be in q_shared.h!
 
+#ifndef SURFACEFLAGS_H_
+#define SURFACEFLAGS_H_
+
 #define CONTENTS_NONE			0
 #define	CONTENTS_SOLID			1		// an eye is never valid in a solid
 #define	CONTENTS_LAVA			8
@@ -64,3 +67,7 @@
 #define SURF_WOOD				0x400000	//!< wood, use grass footsteps etc.
 //RPG-X | GSIO01 | 20/05/2009 | END MOD
 
+#endif /* SURFACEFLAGS_H_ */
+
+
+