diff --git a/include/MacStd/common.hpp b/include/MacStd/common.hpp
index 3fd3b77..a798b7f 100644
--- a/include/MacStd/common.hpp
+++ b/include/MacStd/common.hpp
@@ -433,47 +433,47 @@ namespace macstd
 	};
 
 
-    ///
-    /// Numerical runtime error
-    ///
-    template <typename _Tn>
-    class num_runtime_error : public std::runtime_error
-    {
-    public:
-        typedef _Tn error_type; ///< Error number type
+	///
+	/// Numerical runtime error
+	///
+	template <typename _Tn>
+	class num_runtime_error : public std::runtime_error
+	{
+	public:
+		typedef _Tn error_type; ///< Error number type
 
-    public:
-        ///
-        /// Constructs an exception
-        ///
-        /// \param[in] num  Numeric error code
-        /// \param[in] msg  Error message
-        ///
-        num_runtime_error(_In_ error_type num, _In_ const std::string& msg) :
-            m_num(num),
-            runtime_error(msg)
-        {}
+	public:
+		///
+		/// Constructs an exception
+		///
+		/// \param[in] num  Numeric error code
+		/// \param[in] msg  Error message
+		///
+		num_runtime_error(_In_ error_type num, _In_ const std::string& msg) :
+			m_num(num),
+			runtime_error(msg)
+		{}
 
-        ///
-        /// Constructs an exception
-        ///
-        /// \param[in] num  Numeric error code
-        /// \param[in] msg  Error message
-        ///
-        num_runtime_error(_In_ error_type num, _In_z_ const char *msg) :
-            m_num(num),
-            runtime_error(msg)
-        {}
+		///
+		/// Constructs an exception
+		///
+		/// \param[in] num  Numeric error code
+		/// \param[in] msg  Error message
+		///
+		num_runtime_error(_In_ error_type num, _In_z_ const char *msg) :
+			m_num(num),
+			runtime_error(msg)
+		{}
 
-        ///
-        /// Returns the error number
-        ///
-        error_type number() const
-        {
-            return m_num;
-        }
+		///
+		/// Returns the error number
+		///
+		error_type number() const
+		{
+			return m_num;
+		}
 
-    protected:
-        error_type m_num;  ///< Numeric error code
-    };
+	protected:
+		error_type m_num;  ///< Numeric error code
+	};
 }