diff --git a/lldb/source/Commands/CommandObjectThread.cpp b/lldb/source/Commands/CommandObjectThread.cpp
index f555b62..49167e8 100644
--- a/lldb/source/Commands/CommandObjectThread.cpp
+++ b/lldb/source/Commands/CommandObjectThread.cpp
@@ -67,7 +67,7 @@
         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)
             {
@@ -296,7 +296,7 @@
         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)
             {
@@ -818,7 +818,7 @@
         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)
             {