diff --git a/ci/lib.sh b/ci/lib.sh
index 028fea0e7b..84d1145265 100755
--- a/ci/lib.sh
+++ b/ci/lib.sh
@@ -348,8 +348,8 @@ case "$jobname" in
 linux32)
 	CC=gcc
 	;;
-linux-musl)
-	MESONFLAGS="$MESONFLAGS -DGIT_TEST_UTF8_LOCALE=C.UTF-8"
+linux-musl-meson)
+	MESONFLAGS="$MESONFLAGS -Dtest_utf8_locale=C.UTF-8"
 	;;
 linux-leaks|linux-reftable-leaks)
 	export SANITIZE=leak