diff --git a/Makefile b/Makefile
index 0f31083..2696825 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ DEFAULT_GOAL := $(or $(DEFAULT_GOAL),toolchain)
 ARCH := $(or $(ARCH),x86_64)
 TARGET := $(or $(TARGET),$(ARCH))
 PLATFORM := $(or $(PLATFORM),linux)
-NAME := $(shell basename $(shell git rev-parse --show-toplevel))
+NAME := $(shell basename $(shell git rev-parse --show-toplevel | tr A-Z a-z ))
 IMAGE := local/$(NAME):latest
 USER := $(shell id -u):$(shell id -g)
 CPUS := $(shell docker run -it debian nproc)