diff --git a/rules.mak b/rules.mak
index 65c3b9126..8fa99afdb 100644
--- a/rules.mak
+++ b/rules.mak
@@ -35,7 +35,7 @@ IDB_SNMP_LIBS=-lnetsnmpagent -lnetsnmp -lnetsnmpmibs -lnetsnmphelpers
 
 LDFLAGS=-Wl,--no-as-needed 
 
-#DEBUG_FLAGS=-ggdb3 -fno-tree-vectorize
+#DEBUG_FLAGS=-ggdb3 -fno-tree-vectorize -DSAFE_MUTEX -DSAFEMALLOC
 DEBUG_FLAGS=-g0 -O3 -fno-strict-aliasing -fno-tree-vectorize
 
 #DEBUG_FLAGS+=-DVALGRIND