diff --git a/Makefile b/Makefile
index b0c242d28..f0a1b6198 100644
--- a/Makefile
+++ b/Makefile
@@ -30,7 +30,7 @@ INSTALL = install
 DIFF    = diff
 PREFIX  ?= /usr/local
 MANDIR  ?= $(PREFIX)/share/man
-CFLAGS  ?= -Os -Wall -Wshadow -Wmissing-prototypes -Wwrite-strings
+CFLAGS  ?= -Os -Wall -Wextra -Wno-unused-parameter -Wshadow -Wmissing-prototypes -Wwrite-strings
 EXPORTDIR ?= .
 RANLIB  ?= ranlib
 PKG_CONFIG ?= pkg-config
diff --git a/meson.build b/meson.build
index fda1ab8fa..ca52ccf99 100644
--- a/meson.build
+++ b/meson.build
@@ -15,10 +15,8 @@ lt_version = '@0@.@1@.@2@'.format(lt_current, lt_age, lt_revision)
 warning_flags = [
   '-Wwrite-strings',
   '-Wno-unused-parameter',
-  '-Wno-sign-compare',
   '-Wno-address-of-packed-member',
   '-Wno-enum-conversion',
-  '-Wno-missing-field-initializers',
   '-Wno-missing-braces',
 ]