diff --git a/backend.py b/backend.py
new file mode 100644
index 0000000..e69de29
diff --git a/crawl.py b/crawl.py
index 41baa8d..a0d373e 100755
--- a/crawl.py
+++ b/crawl.py
@@ -117,9 +117,7 @@ d | date: Print the date which the data is from.
         else:
             print("Not implemented: '" + " ".join(argv) + "'")
     except IndexError:
-        if argv is None:
-            pass
-        else:
+        if argv:
             print("Too few arguments: '" + " ".join(argv) + "'")
     except ValueError:
         print("The currency specified does not exist.")
diff --git a/requirements.txt b/requirements.txt
index 3faade6..d14e870 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 PyPDF3
 appdirs
-mechanize
\ No newline at end of file
+mechanize
+money-lib
\ No newline at end of file