diff --git a/lib/Basics/FileResult.h b/lib/Basics/FileResult.h
index c4cb60eb22..d817bd0696 100644
--- a/lib/Basics/FileResult.h
+++ b/lib/Basics/FileResult.h
@@ -28,7 +28,7 @@
 namespace arangodb {
 class FileResult : public Result {
  public:
-  FileResult(bool state);
+  explicit FileResult(bool state);
   FileResult(bool state, int sysErrorNumber);
 
  public:
diff --git a/lib/Basics/Result.h b/lib/Basics/Result.h
index 975194c39f..49c0497d9a 100644
--- a/lib/Basics/Result.h
+++ b/lib/Basics/Result.h
@@ -29,7 +29,10 @@ namespace arangodb {
 class Result {
  public:
   Result() : _errorNumber(TRI_ERROR_NO_ERROR) {}
-  Result(int errorNumber, std::string errorMessage) {}
+  Result(int errorNumber, std::string const& errorMessage) 
+      : _errorNumber(errorNumber), _errorMessage(errorMessage) {}
+  Result(int errorNumber, std::string&& errorMessage) 
+      : _errorNumber(errorNumber), _errorMessage(std::move(errorMessage)) {}
 
   virtual ~Result() {}