diff --git a/util/nvmutil/Makefile b/util/nvmutil/Makefile
index c89b7228..beca4f3a 100644
--- a/util/nvmutil/Makefile
+++ b/util/nvmutil/Makefile
@@ -5,7 +5,7 @@
 CC?=cc
 CSTD?=-std=c90
 WERROR?=
-CWARN?=-Wall -Wextra -pedantic
+CWARN?=-Wall -pedantic
 COPT?=-Os
 CFLAGS?=$(COPT) $(CWARN) $(CSTD)
 LDFLAGS?=