diff --git a/config.mak.dev b/config.mak.dev
index 0fd8cc4d35..95b7bc46ae 100644
--- a/config.mak.dev
+++ b/config.mak.dev
@@ -39,6 +39,7 @@ DEVELOPER_CFLAGS += -Wunused
 DEVELOPER_CFLAGS += -Wvla
 DEVELOPER_CFLAGS += -Wwrite-strings
 DEVELOPER_CFLAGS += -fno-common
+DEVELOPER_CFLAGS += -Wunreachable-code
 
 ifneq ($(filter clang4,$(COMPILER_FEATURES)),)
 DEVELOPER_CFLAGS += -Wtautological-constant-out-of-range-compare
diff --git a/meson.build b/meson.build
index f5c9dfa95b..0c1904b94b 100644
--- a/meson.build
+++ b/meson.build
@@ -698,6 +698,7 @@ if get_option('warning_level') in ['2','3', 'everything'] and compiler.get_argum
     '-Woverflow',
     '-Wpointer-arith',
     '-Wstrict-prototypes',
+    '-Wunreachable-code',
     '-Wunused',
     '-Wvla',
     '-Wwrite-strings',