diff --git a/include/Lexesis/driver.h b/include/Lexesis/driver.h
index 6593801..766f39b 100644
--- a/include/Lexesis/driver.h
+++ b/include/Lexesis/driver.h
@@ -43,6 +43,19 @@ namespace lxs {
             std::string m_language;
             std::string m_lexername;
     };
+    
+    /**
+     * Used to throw errors when the driver could generate a valid lexer name or find the backend for a language
+     */
+
+    class DriverException: public std::exception {
+    public:
+        DriverException(std::string what);
+        virtual const char* what() const throw();
+
+    private:
+        std::string m_what;
+    };
 }
 
 #endif //LEXESIS_DRIVER_H
diff --git a/include/Lexesis/inputparser.h b/include/Lexesis/inputparser.h
index f9dbfda..35167e6 100644
--- a/include/Lexesis/inputparser.h
+++ b/include/Lexesis/inputparser.h
@@ -10,6 +10,7 @@ namespace lxs {
     struct DFA;
     struct ENFA; 
 
+
     /**
      * Used for parsing token rules
      */
@@ -30,6 +31,19 @@ namespace lxs {
              */
             static std::vector<ENFA> linesToEnfa(std::vector<std::pair<std::string,std::string> > &input);
     };
+    
+    /**
+     * Used to throw errors when the inputfile was not valid
+     */
+
+    class InputParserException: public std::exception {
+    public:
+        InputParserException(std::string what);
+        virtual const char* what() const throw();
+
+    private:
+        std::string m_what;
+    };
 }
 
 #endif // INPUT_PARSER_H