One more fix

Makefile

@@ -3,7 +3,7 @@
 # BINNAME=step to change the name of the executable
 # PREFIX=bin/ to change the build output path
 # INSTALL_PREFIX=/usr/local/bin to change the install path
-# GOOS_OVERRIDE="GOOS=linux GOARCH=arm64" to change OS and arch
+# GOOS_OVERRIDE="GOOS=linux GOARCH=arm GOARM=6" to change OS and arch
 # CGO_OVERRIDE="CGO_ENABLED=1" to enable CGO
 #
 # Run `make bootstrap` to set up your local environment.
@@ -182,7 +182,7 @@ define BUNDLE_MAKE
  # $(2) -- Go Architecture (e.g. amd64, arm, arm64, etc.)
  # $(3) -- Go ARM architectural family (e.g. 7, 8, etc.)
  # $(4) -- Parent directory for executables generated by 'make'.
- $Q GOOS=$(1) GOARCH=$(2) GOARM=$(3) PREFIX=$(4) make $(4)bin/step
+ $Q GOOS_OVERRIDE='GOOS=$(1) GOARCH=$(2) GOARM=$(3)' PREFIX=$(4) make $(4)bin/step
 endef
 
 binary-linux-amd64: