diff --git a/framework/Common.h b/framework/Common.h
index b45d1bb..e343612 100644
--- a/framework/Common.h
+++ b/framework/Common.h
@@ -165,20 +165,20 @@ public:
 	virtual void				SetRefreshOnPrint( bool set ) = 0;
 
 								// Prints message to the console, which may cause a screen update if com_refreshOnPrint is set.
-	virtual void				Printf( const char *fmt, ... ) = 0;
+	virtual void				Printf( const char *fmt, ... )id_attribute((format(printf,2,3))) = 0;
 
 								// Same as Printf, with a more usable API - Printf pipes to this.
 	virtual void				VPrintf( const char *fmt, va_list arg ) = 0;
 
 								// Prints message that only shows up if the "developer" cvar is set,
 								// and NEVER forces a screen update, which could cause reentrancy problems.
-	virtual void				DPrintf( const char *fmt, ... ) = 0;
+	virtual void				DPrintf( const char *fmt, ... ) id_attribute((format(printf,2,3))) = 0;
 
 								// Prints WARNING %s message and adds the warning message to a queue for printing later on.
-	virtual void				Warning( const char *fmt, ... ) = 0;
+	virtual void				Warning( const char *fmt, ... ) id_attribute((format(printf,2,3))) = 0;
 
 								// Prints WARNING %s message in yellow that only shows up if the "developer" cvar is set.
-	virtual void				DWarning( const char *fmt, ...) = 0;
+	virtual void				DWarning( const char *fmt, ...) id_attribute((format(printf,2,3))) = 0;
 
 								// Prints all queued warnings.
 	virtual void				PrintWarnings( void ) = 0;
@@ -188,11 +188,11 @@ public:
 
 								// Issues a C++ throw. Normal errors just abort to the game loop,
 								// which is appropriate for media or dynamic logic errors.
-	virtual void				Error( const char *fmt, ... ) = 0;
+	virtual void				Error( const char *fmt, ... ) id_attribute((format(printf,2,3))) = 0;
 
 								// Fatal errors quit all the way to a system dialog box, which is appropriate for
 								// static internal errors or cases where the system may be corrupted.
-	virtual void				FatalError( const char *fmt, ... ) = 0;
+	virtual void				FatalError( const char *fmt, ... ) id_attribute((format(printf,2,3))) = 0;
 
 								// Returns a pointer to the dictionary with language specific strings.
 	virtual const idLangDict *	GetLanguageDict( void ) = 0;