diff --git a/src/mono/mono/eglib/glib.h b/src/mono/mono/eglib/glib.h
index dbcc3997eff0b..6ed8fa0bd0aed 100644
--- a/src/mono/mono/eglib/glib.h
+++ b/src/mono/mono/eglib/glib.h
@@ -789,20 +789,12 @@ void           mono_assertion_message_unreachable (const char *file, int line) G
 const char *   g_get_assertion_message (void);
 
 #ifndef DISABLE_ASSERT_MESSAGES
-#ifdef HAVE_C99_SUPPORT
 /* The for (;;) tells gc thats g_error () doesn't return, avoiding warnings */
-#define g_error(format, ...)    do { g_log (G_LOG_DOMAIN, G_LOG_LEVEL_ERROR, format, __VA_ARGS__); for (;;); } while (0)
-#define g_critical(format, ...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL, format, __VA_ARGS__)
-#define g_warning(format, ...)  g_log (G_LOG_DOMAIN, G_LOG_LEVEL_WARNING, format, __VA_ARGS__)
-#define g_message(format, ...)  g_log (G_LOG_DOMAIN, G_LOG_LEVEL_MESSAGE, format, __VA_ARGS__)
-#define g_debug(format, ...)    g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format, __VA_ARGS__)
-#else   /* HAVE_C99_SUPPORT */
-#define g_error(...)    do { g_log (G_LOG_DOMAIN, G_LOG_LEVEL_ERROR, __VA_ARGS__); for (;;); } while (0)
+#define g_error(...) do { g_log (G_LOG_DOMAIN, G_LOG_LEVEL_ERROR, __VA_ARGS__); for (;;); } while (0)
 #define g_critical(...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL, __VA_ARGS__)
 #define g_warning(...)  g_log (G_LOG_DOMAIN, G_LOG_LEVEL_WARNING, __VA_ARGS__)
 #define g_message(...)  g_log (G_LOG_DOMAIN, G_LOG_LEVEL_MESSAGE, __VA_ARGS__)
 #define g_debug(...)    g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, __VA_ARGS__)
-#endif  /* ndef HAVE_C99_SUPPORT */
 #else
 #define g_error(...)    do { g_log_disabled (G_LOG_DOMAIN, G_LOG_LEVEL_ERROR, __FILE__, __LINE__); for (;;); } while (0)
 #define g_critical(...) g_log_disabled (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL, __FILE__, __LINE__)
diff --git a/src/mono/mono/mini/cfgdump.c b/src/mono/mono/mini/cfgdump.c
index 9f89aefb2e7c0..df52e911b9b1c 100644
--- a/src/mono/mono/mini/cfgdump.c
+++ b/src/mono/mono/mini/cfgdump.c
@@ -27,25 +27,12 @@
 #define CFG_DEBUG
 #endif
 
-
 #ifdef CFG_DEBUG
-
-#ifdef HAVE_C99_SUPPORT
-#define cfg_debug(format, ...) g_debug(format, __VA_ARGS__)
-#else
 #define cfg_debug(...) g_debug(__VA_ARGS__)
-#endif
-
-#else
-
-#ifdef HAVE_C99_SUPPORT
-#define cfg_debug(format, ...) do {} while (0)
 #else
 #define cfg_debug(...) do {} while (0)
 #endif
 
-#endif
-
 static ConstantPoolEntry*
 create_cp_entry (MonoCompile *cfg, void *data, pool_type pt)
 {