diff --git a/Makefile b/Makefile
index 21c97af0d..68c1586dd 100644
--- a/Makefile
+++ b/Makefile
@@ -12,11 +12,11 @@ test: vendor
 .PHONY: test
 
 fmt: vendor
-	vendor/bin/php-cs-fixer fix -v --using-cache=no
+	PHP_CS_FIXER_IGNORE_ENV=true vendor/bin/php-cs-fixer fix -v --using-cache=no
 .PHONY: fmt
 
 fmtcheck: vendor
-	vendor/bin/php-cs-fixer fix -v --dry-run --using-cache=no
+	PHP_CS_FIXER_IGNORE_ENV=true vendor/bin/php-cs-fixer fix -v --dry-run --using-cache=no
 .PHONY: fmtcheck
 
 phpdoc: vendor/bin/phpdoc