diff --git a/Conf.cpp b/Conf.cpp
index 67eb40e..a26eafc 100644
--- a/Conf.cpp
+++ b/Conf.cpp
@@ -440,7 +440,7 @@ bool CConf::read()
 		else if (::strcmp(key, "Columns") == 0)
 			m_hd44780Columns = (unsigned int)::atoi(value);
 		else if (::strcmp(key, "I2CAddress") == 0)
-			m_hd44780i2cAddress = (unsigned int)::atoi(value);
+			m_hd44780i2cAddress = (unsigned int)::strtoul(value, NULL, 16);
 		else if (::strcmp(key, "PWM") == 0)
 			m_hd44780PWM = ::atoi(value) == 1;
 		else if (::strcmp(key, "PWMPin") == 0)