diff --git a/common/net/transport.go b/common/net/transport.go
index ae5d72954..eaf44e5f2 100644
--- a/common/net/transport.go
+++ b/common/net/transport.go
@@ -12,7 +12,7 @@ func ReadFrom(reader io.Reader) ([]byte, error) {
 	buffer := make([]byte, bufferSize)
 	nBytes, err := reader.Read(buffer)
 	if nBytes == 0 {
-		buffer = nil
+		return nil, err
 	}
 	return buffer[:nBytes], err
 }