--- a/piecrust/routing.py	Wed Jun 01 22:11:51 2016 -0700
+++ b/piecrust/routing.py	Wed Jun 01 22:19:01 2016 -0700
@@ -361,7 +361,7 @@
             f_args = args[:-1]
             for r, f in self._funcs:
                 if r.source_name == args[-1]:
-                    return f(f_args, **kwargs)
+                    return f(*f_args, **kwargs)
             raise Exception("No such source: %s" % args[-1])
 
         raise Exception("Incorrect number of arguments for route function. "

--- a/tests/bakes/test_multiblog.yaml	Wed Jun 01 22:11:51 2016 -0700
+++ b/tests/bakes/test_multiblog.yaml	Wed Jun 01 22:19:01 2016 -0700
@@ -5,8 +5,8 @@
 in:
     posts/one/2016-01-01_post1.html: ''
     posts/two/2016-01-02_post2.html: ''
-    pages/foo-one.html: "Link: {{pcposturl(2016, 01, 01, 'post1', 'one')}}"
-    pages/foo-two.html: "Link: {{pcposturl(2016, 01, 02, 'post2', 'two')}}"
+    pages/foo-one.html: "Link: {{pconeposturl(2016, 01, 01, 'post1')}}"
+    pages/foo-two.html: "Link: {{pctwoposturl(2016, 01, 02, 'post2')}}"
 outfiles:
     foo-one.html: "Link: /one/2016/01/01/post1.html"
     foo-two.html: "Link: /two/2016/01/02/post2.html"
@@ -14,11 +14,15 @@
 config:
     site:
         blogs: [one, two]
+    one:
+        func_prefix: pc
+    two:
+        func_prefix: pc
 in:
     posts/one/2016-01-01_post1.html: ''
     posts/two/2016-01-02_post2.html: ''
-    pages/foo-one.html: "---\nblog: one\n---\nLink: {{pcposturl(2016, 01, 01, 'post1')}}"
-    pages/foo-two.html: "---\nblog: two\n---\nLink: {{pcposturl(2016, 01, 02, 'post2')}}"
+    pages/foo-one.html: "---\nblog: one\n---\nLink: {{pcposturl(2016, 01, 01, 'post1', 'one')}}"
+    pages/foo-two.html: "---\nblog: two\n---\nLink: {{pcposturl(2016, 01, 02, 'post2', 'two')}}"
 outfiles:
     foo-one.html: "Link: /one/2016/01/01/post1.html"
     foo-two.html: "Link: /two/2016/01/02/post2.html"