diff --git a/tests/build_cover.sh b/tests/build_cover.sh
index 4d7cdd3..929511c 100755
--- a/tests/build_cover.sh
+++ b/tests/build_cover.sh
@@ -1,2 +1,5 @@
 #!/bin/sh
-exec go test -tags 'cover_main debugflags' -coverpkg 'github.com/foxcpp/maddy,github.com/foxcpp/maddy/pkg/...,github.com/foxcpp/maddy/internal/...' -cover -covermode atomic -c cover_test.go -o maddy.cover
+if [ -z "$GO" ]; then
+	GO=go
+fi
+exec $GO test -tags 'cover_main debugflags' -coverpkg 'github.com/foxcpp/maddy,github.com/foxcpp/maddy/pkg/...,github.com/foxcpp/maddy/internal/...' -cover -covermode atomic -c cover_test.go -o maddy.cover
diff --git a/tests/run.sh b/tests/run.sh
index 4790bf1..afbc802 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -2,6 +2,10 @@
 
 set -e
 
+if [ -z "$GO" ]; then
+	export GO=go
+fi
+
 ./build_cover.sh
 
 clean() {
@@ -9,5 +13,5 @@ clean() {
 }
 trap clean EXIT
 
-go test -tags integration -integration.executable ./maddy.cover -integration.coverprofile /tmp/maddy-coverage-report "$@"
-go run gocovcat.go /tmp/maddy-coverage-report* > coverage.out
+$GO test -tags integration -integration.executable ./maddy.cover -integration.coverprofile /tmp/maddy-coverage-report "$@"
+$GO run gocovcat.go /tmp/maddy-coverage-report* > coverage.out