diff --git a/reactos/include/reactos/debug.h b/reactos/include/reactos/debug.h
index 33df1037a23..18651ed3cc1 100644
--- a/reactos/include/reactos/debug.h
+++ b/reactos/include/reactos/debug.h
@@ -107,31 +107,16 @@ RtlAssert(
         #define CHECKPOINT
     #endif
 
-    #define UNIMPLEMENTED \
-        DbgPrint("WARNING:  %s at %s:%d is UNIMPLEMENTED!\n",__FUNCTION__,__FILE__,__LINE__);
+    #define UNIMPLEMENTED       DbgPrint("WARNING:  %s at %s:%d is UNIMPLEMENTED!\n",__FUNCTION__,__FILE__,__LINE__);
 
-    #if defined(__GNUC__)
-        #define ERR_(ch, args...)   DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_ERROR_LEVEL, "(%s:%d) ", __FILE__, __LINE__), \
-                                    DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_ERROR_LEVEL, ##args)
-        #define WARN_(ch, args...)  DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_WARNING_LEVEL, "(%s:%d) ", __FILE__, __LINE__), \
-                                    DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_WARNING_LEVEL, ##args)
-        #define TRACE_(ch, args...) DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_TRACE_LEVEL, "(%s:%d) ", __FILE__, __LINE__), \
-                                    DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_TRACE_LEVEL, ##args)
-        #define INFO_(ch, args...)  DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_INFO_LEVEL, "(%s:%d) ", __FILE__, __LINE__), \
-                                    DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_INFO_LEVEL, ##args)
-    #elif defined(_MSC_VER)
     #define ERR_(ch, ...)       DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_ERROR_LEVEL, "(%s:%d) ", __FILE__, __LINE__), \
-                                    DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_ERROR_LEVEL, __VA_ARGS__)
+                                DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_ERROR_LEVEL, __VA_ARGS__)
     #define WARN_(ch, ...)      DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_WARNING_LEVEL, "(%s:%d) ", __FILE__, __LINE__), \
-                                    DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_WARNING_LEVEL, __VA_ARGS__)
+                                DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_WARNING_LEVEL, __VA_ARGS__)
     #define TRACE_(ch, ...)     DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_TRACE_LEVEL, "(%s:%d) ", __FILE__, __LINE__), \
-                                    DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_TRACE_LEVEL, __VA_ARGS__)
+                                DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_TRACE_LEVEL, __VA_ARGS__)
     #define INFO_(ch, ...)      DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_INFO_LEVEL, "(%s:%d) ", __FILE__, __LINE__), \
-                                    DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_INFO_LEVEL, __VA_ARGS__)
-    #else
-        #error Unknown compiler
-    #endif
-
+                                DbgPrintEx(DPFLTR_##ch##_ID, DPFLTR_INFO_LEVEL, __VA_ARGS__)
 #else
 
     /* On non-debug builds, we never show these */