diff --git a/Makefile b/Makefile
index 156223b..53cc0f8 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,8 @@ all: $(BUILD)/tbm
 CFLAGS += -Iinclude
 CFLAGS += -Wall -Wundef -Wextra -Wshadow -Wimplicit-function-declaration
 CFLAGS += -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes
+CFLAGS += -Os
+LDFLAGS += -Os
 
 obj-y += source/bitops.o
 obj-y += source/bitset.o