diff --git a/Makefile b/Makefile
index 1b08e62324..003c6a3644 100644
--- a/Makefile
+++ b/Makefile
@@ -66,6 +66,8 @@ RUST_VERSION := $(eval RUST_VERSION := $(shell cat versions/RUST_VERSION))$(RUST
 
 NPM_GLOBAL_PREFIX := $(eval NPM_GLOBAL_PREFIX := $(shell npm prefix --location=global))$(NPM_GLOBAL_PREFIX)
 
+NPM_GLOBAL_PREFIX := $(eval NPM_GLOBAL_PREFIX := $(shell npm prefix --location=global))$(NPM_GLOBAL_PREFIX)
+
 TEST_NOT_IMPL_PLACEHOLDER = NOT IMPLEMENTED BELOW
 
 TEMP_DIR := $(eval TEMP_DIR := $(shell mktemp -d))$(TEMP_DIR)