diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 See full history at: <https://github.com/faylang/fay/commits>
 
+### 0.19.2 (2014-04-10)
+
+* Fixes a bug where arrays types with an empty data decls would be deserialized into a Fay list.
+
 #### 0.19.1.2 (2014-04-07)
 
 * Fix optimizations that were not applied and add codegen test cases.
diff --git a/fay.cabal b/fay.cabal
--- a/fay.cabal
+++ b/fay.cabal
@@ -1,5 +1,5 @@
 name:                fay
-version:             0.19.1.2
+version:             0.19.2
 synopsis:            A compiler for Fay, a Haskell subset that compiles to JavaScript.
 description:         Fay is a proper subset of Haskell which is type-checked
                      with GHC, and compiled to JavaScript. It is lazy, pure, has a Fay monad,
diff --git a/js/runtime.js b/js/runtime.js
--- a/js/runtime.js
+++ b/js/runtime.js
@@ -394,17 +394,17 @@
       type.push(["automatic"]);
     return Fay$$jsToFay(["function", type], jsObj);
   }
+  else if(base == "automatic" && jsObj instanceof Array) {
+    var list = null;
+    for (var i = jsObj.length - 1; i >= 0; i--) {
+      list = new Fay$$Cons(Fay$$jsToFay([base], jsObj[i]), list);
+    }
+    return list;
+  }
   else if(base == "automatic" || base == "user") {
     if (jsObj && jsObj['instance']) {
       var jsToFayFun = Fay$$jsToFayHash[jsObj["instance"]];
       return jsToFayFun ? jsToFayFun(type,type[2],jsObj) : jsObj;
-    }
-    else if (jsObj instanceof Array) {
-      var list = null;
-      for (var i = jsObj.length - 1; i >= 0; i--) {
-        list = new Fay$$Cons(Fay$$jsToFay([base], jsObj[i]), list);
-      }
-      return list;
     }
     else
       return jsObj;
diff --git a/tests/EmptyDataDeclArray.hs b/tests/EmptyDataDeclArray.hs
new file mode 100644
--- /dev/null
+++ b/tests/EmptyDataDeclArray.hs
@@ -0,0 +1,20 @@
+import FFI
+
+data Array a
+
+empty :: Fay (Array a)
+empty = ffi "[]"
+
+push:: a -> Array a -> Fay ()
+push = ffi "%2.push(%1)"
+
+len :: Array a -> Fay Int
+len = ffi "%1['length']"
+
+main :: Fay ()
+main = do
+  arr <- empty
+  print arr
+  push (5::Int) arr
+  print =<< len arr
+  print arr
diff --git a/tests/EmptyDataDeclArray.res b/tests/EmptyDataDeclArray.res
new file mode 100644
--- /dev/null
+++ b/tests/EmptyDataDeclArray.res
@@ -0,0 +1,3 @@
+[]
+1
+[ 5 ]