diff --git a/source/Commands/CommandObjectSettings.cpp b/source/Commands/CommandObjectSettings.cpp
index e55da23..7c57832 100644
--- a/source/Commands/CommandObjectSettings.cpp
+++ b/source/Commands/CommandObjectSettings.cpp
@@ -119,7 +119,7 @@
         SetOptionValue (uint32_t option_idx, const char *option_arg)
         {
             Error error;
-            char short_option = (char) m_getopt_table[option_idx].val;
+            const int short_option = m_getopt_table[option_idx].val;
 
             switch (short_option)
             {