diff --git a/Makefile b/Makefile
index 6c8fd7f..b98061d 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@ PATH := $(GOBIN):$(PATH)
 # and so, without the following line, the shell does not end up
 # trying commands in $(GOBIN) first.
 # See https://stackoverflow.com/a/36226784/3690207
-SHELL := env GOBIN=$(GOBIN) PATH=$(PATH) /bin/bash
+SHELL := env GOBIN="$(GOBIN)" PATH="$(PATH)" /bin/bash
 
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