diff --git a/Makefile b/Makefile
index 29e6fe6..19d1e69 100644
--- a/Makefile
+++ b/Makefile
@@ -31,7 +31,7 @@ ifeq ($(CONFIG_NATIVE),true)
 endif
 
 CFLAGS := $(CFLAGS) -std=c17 $(SHARED_FLAGS) -Wmissing-prototypes
-CXXFLAGS := $(CXXFLAGS) -std=c++17 $(SHARED_FLAGS)
+CXXFLAGS := $(CXXFLAGS) -std=c++17 -fsized-deallocation $(SHARED_FLAGS)
 LDFLAGS := $(LDFLAGS) -Wl,--as-needed,-z,defs,-z,relro,-z,now,-z,nodlopen,-z,text
 
 SOURCES := chacha.c h_malloc.c memory.c pages.c random.c util.c
diff --git a/test/simple-memory-corruption/Makefile b/test/simple-memory-corruption/Makefile
index 22ca226..d13e3dd 100644
--- a/test/simple-memory-corruption/Makefile
+++ b/test/simple-memory-corruption/Makefile
@@ -1,7 +1,6 @@
 dir=$(dir $(realpath $(firstword $(MAKEFILE_LIST))))
 
 CONFIG_SLAB_CANARY := true
-# Clang 13 still doesn't enable sized deallocation by default
 CXXFLAGS := -std=c++17 -fsized-deallocation
 
 ifeq (,$(filter $(CONFIG_SLAB_CANARY),true false))