diff --git a/.travis.yml b/.travis.yml
index ae87ca764..786d2a62a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -49,6 +49,9 @@ script:
   - export CGO_ENABLED=$TRAVIS_CGO_ENABLED
   - GIT_CHECK_EXCLUDE="./vendor" TRAVIS_COMMIT_RANGE="${TRAVIS_COMMIT_RANGE/.../..}" make dco
   - make fmt
+# FIXME: For non-linux GOOS, without running `go build -i`, vet fails with `vet: import failed: can't find import: fmt`...
+# Note that `go build -i` requires write permission to GOROOT. (So it is not called in Makefile)
+  - go build -i .
   - make vet
   - make build
   - make binaries
diff --git a/Makefile b/Makefile
index 0c5bd2006..b1fc44805 100644
--- a/Makefile
+++ b/Makefile
@@ -117,7 +117,7 @@ ineffassign: ## run ineffassign
 
 build: ## build the go packages
 	@echo "$(WHALE) $@"
-	@go build -i -v ${EXTRA_FLAGS} ${GO_LDFLAGS} ${GO_GCFLAGS} ${PACKAGES}
+	@go build -v ${EXTRA_FLAGS} ${GO_LDFLAGS} ${GO_GCFLAGS} ${PACKAGES}
 
 test: ## run tests, except integration tests and tests that require root
 	@echo "$(WHALE) $@"
@@ -140,7 +140,7 @@ FORCE:
 # Build a binary from a cmd.
 bin/%: cmd/% FORCE
 	@echo "$(WHALE) $@${BINARY_SUFFIX}"
-	@go build -i -o $@${BINARY_SUFFIX} ${GO_LDFLAGS} ${GO_TAGS} ${GO_GCFLAGS} ./$<
+	@go build -o $@${BINARY_SUFFIX} ${GO_LDFLAGS} ${GO_TAGS} ${GO_GCFLAGS} ./$<
 
 binaries: $(BINARIES) ## build binaries
 	@echo "$(WHALE) $@"