diff --git a/cryptocurrency/cryptocurrency b/cryptocurrency/cryptocurrency
index 0db32c0..d0e95f9 100755
--- a/cryptocurrency/cryptocurrency
+++ b/cryptocurrency/cryptocurrency
@@ -254,7 +254,7 @@ EOF
 
 
 
-while getopts "f:uvh" opt; do
+while getopts "of:uvh" opt; do
   case "$opt" in
     \?) echo "Invalid option: -$OPTARG" >&2
         exit 1