diff --git a/src/mygetopt.c b/src/mygetopt.c
index 90408f1..908d40c 100644
--- a/src/mygetopt.c
+++ b/src/mygetopt.c
@@ -63,7 +63,7 @@ int mygetopt(int argc, char * const _argv[], const char *optstring,
         if(tmp[1] == ':')
         {
             if(flag[2] != '\0')
-                myoptarg = tmp + 2;
+                myoptarg = flag + 2;
             else
                 myoptarg = argv[myoptind++];
             return ret;