diff --git a/Makefile b/Makefile
index 47d0d81fa..b3b191ad7 100644
--- a/Makefile
+++ b/Makefile
@@ -67,6 +67,7 @@ GOPATHS=$(shell echo ${GOPATH} | tr ":" "\n" | tr ";" "\n")
 
 TESTFLAGS_RACE=
 GO_BUILD_FLAGS=
+# See Golang issue re: '-trimpath': https://github.com/golang/go/issues/13809
 GO_GCFLAGS=$(shell				\
 	set -- ${GOPATHS};			\
 	echo "-gcflags=-trimpath=$${1}/src";	\