diff --git a/inc/FileSystem.hpp b/inc/FileSystem.hpp
index f206a1a..bc31c5d 100644
--- a/inc/FileSystem.hpp
+++ b/inc/FileSystem.hpp
@@ -5,11 +5,12 @@
 
 #include <sstream>
 
-// in subtree links should be in-tree after copy operation
-// use C:/ for root
-// links have unique names
 // tests
+// links have unique names
+// use C:/ for root
+// copy operator exit if exists, do not rename
 // clean-ups
+// in subtree links should be in-tree after copy operation
 
 class FileSystem {
 public:
diff --git a/src/FileSystem.cpp b/src/FileSystem.cpp
index 0578898..b87474a 100644
--- a/src/FileSystem.cpp
+++ b/src/FileSystem.cpp
@@ -34,7 +34,7 @@ std::shared_ptr<Node> FileSystem::getNode(const Path& path, bool parent) {
 
 bool FileSystem::changeCurrent(const Path& path) {
   if (path.isInvalid()) {
-    gError = "Invalid path";
+    gError = "Path not found";
     return false;
   }
 
diff --git a/src/Interpreter.cpp b/src/Interpreter.cpp
index c795832..cf31977 100644
--- a/src/Interpreter.cpp
+++ b/src/Interpreter.cpp
@@ -126,7 +126,7 @@ bool Interpreter::interpret(const std::string& command) {
   }
 
   if (iter->second.numArguments != words.size() - 1) {
-    reportError("invalid number of arguments given");
+    reportError("Invalid number of arguments given for: " + commandName);
     return false;
   }