diff --git a/autoload/ghcmod.vim b/autoload/ghcmod.vim
index 5968659..346021b 100644
--- a/autoload/ghcmod.vim
+++ b/autoload/ghcmod.vim
@@ -32,8 +32,8 @@ function! ghcmod#get_visual_selection()
   return join(lines, "\n")
 endfunction
 
-function! ghcmod#get_doc_url(path, module, fexp, line, col) "{{{
-  let l:cmd = ghcmod#build_command(['imported-from', a:path, a:line, a:col, a:fexp])
+function! ghcmod#get_doc_url(path, line, col) "{{{
+  let l:cmd = ghcmod#build_command(['imported-from', a:path, a:line, a:col])
   let l:output = ghcmod#system(l:cmd)
   let l:lines = split(l:output, '\n')
 
diff --git a/autoload/ghcmod/command.vim b/autoload/ghcmod/command.vim
index 3ff4cf8..9b41917 100644
--- a/autoload/ghcmod/command.vim
+++ b/autoload/ghcmod/command.vim
@@ -288,7 +288,7 @@ function! ghcmod#command#opendoc(fexp, force, vismode) "{{{
   let l:line = line('.')
   let l:col = col('.')
 
-  let l:doc_url = ghcmod#get_doc_url(l:path, ghcmod#detect_module(), l:fexp, l:line, l:col)
+  let l:doc_url = ghcmod#get_doc_url(l:path, l:line, l:col)
 
   let l:bits = split(l:doc_url)
 
@@ -336,7 +336,7 @@ function! ghcmod#command#echo_doc_url(fexp, force, vismode) "{{{
   let l:line = line('.')
   let l:col = col('.')
 
-  echo ghcmod#get_doc_url(l:path, ghcmod#detect_module(), l:fexp, l:line, l:col)
+  echo ghcmod#get_doc_url(l:path, l:line, l:col)
 endfunction "}}}
 
 " vim: set ts=2 sw=2 et fdm=marker: