diff --git a/package/go/go.mk b/package/go/go.mk
index 305a4926ee..f9445c7dd3 100644
--- a/package/go/go.mk
+++ b/package/go/go.mk
@@ -73,6 +73,7 @@ endif
 HOST_GO_TOOLDIR = $(HOST_GO_ROOT)/pkg/tool/linux_$(GO_GOARCH)
 HOST_GO_TARGET_ENV = \
 	$(HOST_GO_COMMON_ENV) \
+	GOOS="linux" \
 	GOARCH=$(GO_GOARCH) \
 	GOCACHE="$(HOST_GO_TARGET_CACHE)" \
 	CC="$(TARGET_CC)" \
@@ -95,6 +96,7 @@ endif
 HOST_GO_CROSS_ENV = \
 	CC_FOR_TARGET="$(TARGET_CC)" \
 	CXX_FOR_TARGET="$(TARGET_CXX)" \
+	GOOS="linux" \
 	GOARCH=$(GO_GOARCH) \
 	$(if $(GO_GO386),GO386=$(GO_GO386)) \
 	$(if $(GO_GOARM),GOARM=$(GO_GOARM)) \
@@ -109,6 +111,7 @@ endif # BR2_PACKAGE_HOST_GO_TARGET_ARCH_SUPPORTS
 # For the convenience of host golang packages
 HOST_GO_HOST_ENV = \
 	$(HOST_GO_COMMON_ENV) \
+	GOOS="" \
 	GOARCH="" \
 	GOCACHE="$(HOST_GO_HOST_CACHE)" \
 	CC="$(HOSTCC_NOCCACHE)" \