diff --git a/Makefile b/Makefile
index 6fb43fb..8ee2af0 100644
--- a/Makefile
+++ b/Makefile
@@ -99,7 +99,8 @@ CPPFLAGS += \
     -DFREE_SLABS_QUARANTINE_RANDOM_LENGTH=$(CONFIG_FREE_SLABS_QUARANTINE_RANDOM_LENGTH) \
     -DCONFIG_CLASS_REGION_SIZE=$(CONFIG_CLASS_REGION_SIZE) \
     -DN_ARENA=$(CONFIG_N_ARENA) \
-    -DCONFIG_STATS=$(CONFIG_STATS)
+    -DCONFIG_STATS=$(CONFIG_STATS) \
+    -D_FORTIFY_SOURCE=2 -O1
 
 libhardened_malloc.so: $(OBJECTS)
 	$(CC) $(CFLAGS) $(LDFLAGS) -shared $^ $(LDLIBS) -o $@