diff --git a/tool/Command.cpp b/tool/Command.cpp
index c51ad312..82590d13 100644
--- a/tool/Command.cpp
+++ b/tool/Command.cpp
@@ -146,6 +146,13 @@ void Command::throwInvalidUsageException(const stringstream &s) const
 
 /*****************************************************************************/
 
+void Command::throwCommandException(const string &msg) const
+{
+    throw CommandException(msg);
+}
+
+/*****************************************************************************/
+
 void Command::throwCommandException(const stringstream &s) const
 {
     throw CommandException(s);
diff --git a/tool/Command.h b/tool/Command.h
index 275cb8e3..a51aa171 100644
--- a/tool/Command.h
+++ b/tool/Command.h
@@ -62,6 +62,11 @@ class CommandException:
     friend class Command;
 
     protected:
+        /** Constructor with char * parameter. */
+        CommandException(
+                const string &msg /**< Message. */
+                ): runtime_error(msg) {}
+
         /** Constructor with stringstream parameter. */
         CommandException(
                 const stringstream &s /**< Message. */
@@ -116,6 +121,7 @@ class Command
         enum {BreakAfterBytes = 16};
 
         void throwInvalidUsageException(const stringstream &) const;
+        void throwCommandException(const string &) const;
         void throwCommandException(const stringstream &) const;
         void throwSingleSlaveRequired(unsigned int) const;