diff --git a/src/fennel-ls/formatter.fnl b/src/fennel-ls/formatter.fnl
index 5c38c05..2eaddd7 100644
--- a/src/fennel-ls/formatter.fnl
+++ b/src/fennel-ls/formatter.fnl
@@ -14,9 +14,14 @@ user code. Fennel-ls doesn't support user-code formatting as of now."
   (.. (code-block (.. "("
                       (tostring special)
                       (if name (.. " " (tostring name)) "")
-                      (.. " " (view args
-                                {:one-line? true
-                                 :prefer-colon? true}))
+                      (.. " "
+                          (: (view args
+                               {:empty-as-sequence? true
+                                :one-line? true
+                                :prefer-colon? true})
+                             :gsub ":([%w?_-]+) ([%w?]+)([ }])"
+                             #(if (= $1 $2)
+                                (.. ": " $2 $3))))
                       " ...)"))
       (if docstring (.. "\n" docstring) "")))
 
diff --git a/test/hover.fnl b/test/hover.fnl
index faa0bab..0a8accb 100644
--- a/test/hover.fnl
+++ b/test/hover.fnl
@@ -80,10 +80,12 @@ new message handler `msgh`.")
   (check "(λ foo| [x ...]
             \"not a docstring, this gets returned\")"
          "```fnl\n(fn foo [x ...] ...)\n```")
-  ;; TODO cleanup signatures
-  ; (check "(λ foo| [{: start : end} ...]
-  ;           :body)"
-  ;        "```fnl\n(fn foo [{: start : end} ...] ...)\n```")
+  (check "(λ foo| [{: start : end}]
+            :body)"
+         "```fnl\n(fn foo [{: end : start}] ...)\n```")
+  (check "(λ foo| [{:list [a b c] :table {: d : e : f}}]
+            :body)"
+         "```fnl\n(fn foo [{:list [a b c] :table {: d : e : f}}] ...)\n```")
   nil)
 
 (fn test-multisym []