diff --git a/Makefile b/Makefile
index f30f0d8..e793ab5 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,5 @@
 CONFIG_CXX_ALLOCATOR := true
+CONFIG_UBSAN := false
 
 CPPFLAGS := -D_GNU_SOURCE
 SHARED_FLAGS := -O2 -flto -fPIC -fvisibility=hidden -fno-plt -pipe -Wall -Wextra
@@ -16,6 +17,11 @@ ifeq ($(CONFIG_CXX_ALLOCATOR),true)
     OBJECTS += new.o
 endif
 
+ifeq ($(CONFIG_UBSAN),true)
+    CFLAGS += -fsanitize=undefined
+    CXXFLAGS += -fsanitize=undefined
+endif
+
 hardened_malloc.so: $(OBJECTS)
 	$(CC) $(CFLAGS) $(LDFLAGS) -shared $^ $(LDLIBS) -o $@