diff --git a/main.cpp b/main.cpp
index f662156..a32d17b 100644
--- a/main.cpp
+++ b/main.cpp
@@ -29,7 +29,7 @@ int main(int argc, char **argv)
     int tcount = 0;
     int maxiter = 0;
 
-    while ((c = getopt(argc, argv, "t::i::")) != -1) {
+    while ((c = getopt(argc, argv, "t:i:")) != -1) {
         switch (c) {
             case 't':
                 targ = optarg;