diff --git a/src/utictactoe.c b/src/utictactoe.c
index ba6943a..001f255 100644
--- a/src/utictactoe.c
+++ b/src/utictactoe.c
@@ -49,14 +49,14 @@ int main(int argc, char* argv[]) {
           {"inception-level",   optional_argument,  0, 'i'},
           {"cross-ai",          required_argument,  0, 'x'},
           {"round-ai",          required_argument,  0, 'o'},
-          {"contest",           no_argument,        0, 'c'},
+          {"contest",           required_argument,  0, 'c'},
           {"verbose",           no_argument,        0, 'v'},
           {"version",           no_argument,        0, 'V'},
           {"help",              no_argument,        0, 'h'},
           {0, 0, 0, 0}
         };
 
-    while ((optc = getopt_long (argc, argv, "i::x:o:cvVh", long_opts, NULL)) != -1){
+    while ((optc = getopt_long (argc, argv, "i::x:o:c:vVh", long_opts, NULL)) != -1){
         switch (optc) {
         case 'i': /* 'a' option */
             if ( OPTIONAL_ARGUMENT_IS_PRESENT ) {