diff --git a/lldb/source/Commands/CommandObjectWatchpointCommand.cpp b/lldb/source/Commands/CommandObjectWatchpointCommand.cpp
index eaf3b35..2f48249 100644
--- a/lldb/source/Commands/CommandObjectWatchpointCommand.cpp
+++ b/lldb/source/Commands/CommandObjectWatchpointCommand.cpp
@@ -396,7 +396,7 @@
         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)
             {