diff --git a/src/Nibbler.cpp b/src/Nibbler.cpp
index ac6558f14..6c7f7e0de 100644
--- a/src/Nibbler.cpp
+++ b/src/Nibbler.cpp
@@ -507,74 +507,6 @@ bool Nibbler::getNumber (double &result)
   return isnumber;
 }
 
-////////////////////////////////////////////////////////////////////////////////
-// number:
-//   int frac? exp?
-// 
-// int:
-//   digit+
-// 
-// frac:
-//   . digit+
-// 
-// exp:
-//   e digit+
-// 
-// e:
-//   e|E (+|-)?
-// 
-bool Nibbler::getUnsignedNumber (double& result)
-{
-  auto i = _cursor;
-
-  // digit+
-  if (i < _length && Lexer::isDigit (_input[i]))
-  {
-    ++i;
-
-    while (i < _length && Lexer::isDigit (_input[i]))
-      ++i;
-
-    // ( . digit+ )?
-    if (i < _length && _input[i] == '.')
-    {
-      ++i;
-
-      while (i < _length && Lexer::isDigit (_input[i]))
-        ++i;
-    }
-
-    // ( [eE] [+-]? digit+ )?
-    if (i < _length && (_input[i] == 'e' || _input[i] == 'E'))
-    {
-      ++i;
-
-      if (i < _length && (_input[i] == '+' || _input[i] == '-'))
-        ++i;
-
-      if (i < _length && Lexer::isDigit (_input[i]))
-      {
-        ++i;
-
-        while (i < _length && Lexer::isDigit (_input[i]))
-          ++i;
-
-        result = strtof (_input.substr (_cursor, i - _cursor).c_str (), NULL);
-        _cursor = i;
-        return true;
-      }
-
-      return false;
-    }
-
-    result = strtof (_input.substr (_cursor, i - _cursor).c_str (), NULL);
-    _cursor = i;
-    return true;
-  }
-
-  return false;
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 bool Nibbler::getLiteral (const std::string& literal)
 {
diff --git a/src/Nibbler.h b/src/Nibbler.h
index 0f33ae2cd..f674a5b2d 100644
--- a/src/Nibbler.h
+++ b/src/Nibbler.h
@@ -71,7 +71,6 @@ public:
   bool getUnsignedInt (int&);
   bool getNumber (std::string&);
   bool getNumber (double&);
-  bool getUnsignedNumber (double&);
   bool getLiteral (const std::string&);
 #ifdef NIBBLER_FEATURE_REGEX
   bool getRx (const std::string&, std::string&);