diff --git a/to-edn.nix b/to-edn.nix
index b5c3487..7f4a4e8 100644
--- a/to-edn.nix
+++ b/to-edn.nix
@@ -3,10 +3,12 @@
 with lib;
 let
   isSymbol = str: !(isNull (builtins.match "^'.+" str));
-  stripQuote = str: head (builtins.match "^'(.+)" str);
+  stripQuote = str:
+    if (isSymbol str) then head (builtins.match "^'(.+)" str) else str;
   parseStr = str: if (isSymbol str) then (stripQuote str) else ''"${str}"'';
-
+  parseKeyword = str: if (isSymbol str) then (stripQuote str) else ":${str}";
   join-str = concatStringsSep " ";
+
   toEDN = ds:
     if isString ds then
       parseStr ds
@@ -18,7 +20,10 @@ let
           "[ ${join-str (map toEDN ds)} ]"
         else
           (if isAttrs ds then
-            "{ ${join-str (mapAttrsToList (k: v: ":${k} ${toEDN v}") ds)} }"
+            "{ ${
+              join-str
+              (mapAttrsToList (k: v: ":${parseKeyword k} ${toEDN v}") ds)
+            } }"
           else
             throw "unsupported type: ${builtins.typeOf ds}: ${ds}")));