diff --git a/Makefile b/Makefile
index 0467146babc3405405b5641641845fe4011f9eae..28ed2ea9150b29ca7f09ca3a171b1b28a6505641 100644
--- a/Makefile
+++ b/Makefile
@@ -60,6 +60,8 @@ CFLAGS   += -std=c99 -pedantic -Wcast-qual -Wall -W -Wextra -Wno-long-long     \
             -Wno-implicit-fallthrough -ffp-contract=off
 # to be uncommented in CI
 # CFLAGS += -Werror
+CFLAGS += -Winit-self
+CFLAGS += -Wunused-but-set-variable
 
 # libs to link
 LDLIBS   += -lm