diff --git a/mem.c b/mem.c
index 3139904..deefff3 100644
--- a/mem.c
+++ b/mem.c
@@ -159,6 +159,9 @@
 #ifdef MAP_STACK
 	{ MAP_STACK,	"MAP_STACK"	},
 #endif
+#if defined MAP_UNINITIALIZED && MAP_UNINITIALIZED > 0
+	{ MAP_UNINITIALIZED,"MAP_UNINITIALIZED"},
+#endif
 #ifdef MAP_NOSYNC
 	{ MAP_NOSYNC,	"MAP_NOSYNC"	},
 #endif