diff --git a/README.md b/README.md
index 372b7e5f..2f5fef6f 100644
--- a/README.md
+++ b/README.md
@@ -119,8 +119,6 @@ const configuration await expand("${include('" + '/path/to/the/config.json' + "'
         -   [Parameters](#parameters-9)
 -   [merge](#merge)
     -   [Parameters](#parameters-10)
--   [removeSensibleValues](#removesensiblevalues)
-    -   [Parameters](#parameters-11)
 
 ## defaultConstants
 
@@ -277,17 +275,6 @@ When a and b are arrays of values only the none duplaces are appendend to a
 
 Returns **any** merged b into a
 
-## removeSensibleValues
-
-genereates a new object tree by removing sensible values like credentials from it
-
-### Parameters
-
--   `object` **[Object](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object)** 
--   `toBeRemoved`   (optional, default `key=>key.match(/pass|auth|key|user|secret/)`)
-
-Returns **[Object](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object)** object tree free of sensible data
-
 # install
 
 With [npm](http://npmjs.org) do:
diff --git a/src/util.mjs b/src/util.mjs
index a7b7d4f3..3bb66a48 100644
--- a/src/util.mjs
+++ b/src/util.mjs
@@ -20,7 +20,7 @@ export function merge(a, b) {
 
   if (Array.isArray(a)) {
     if (Array.isArray(b)) {
-      return [...a, ...a.filter(x => !b.find(e => equal(e, x)))];
+      return [...a, ...b.filter(x => !a.find(e => equal(e, x)))];
     }
     return [...a, b];
   }
diff --git a/tests/merge-test.mjs b/tests/merge-test.mjs
index 45377206..4ff57912 100644
--- a/tests/merge-test.mjs
+++ b/tests/merge-test.mjs
@@ -23,6 +23,32 @@ test("merge complex array", async t =>
     [{ a: 1 }, { b: 2 }]
   ));
 
+test("merge complex array 2", async t =>
+  t.deepEqual(
+    await expand([
+      {
+        "type": "github-repository-provider"
+      },
+      {
+        "type": "gitea-repository-provider"
+      }
+    ], {
+        default: [
+          {
+            "type": "github-repository-provider"
+          }
+        ]
+      }),
+    [
+      {
+        "type": "github-repository-provider"
+      },
+      {
+        "type": "gitea-repository-provider"
+      }
+    ]
+  ));
+
 test("merge array", async t =>
   t.deepEqual(
     await expand(
@@ -51,9 +77,9 @@ test("merge array", async t =>
   ));
 
 
-test("eq1",t =>{
-  t.true(equal(1,1));
-  t.true(equal([1],[1]));
-  t.true(equal([{a:1}],[{a:1}]));
-  t.false(equal([{a:1}],[{b:1}]));
+test("eq1", t => {
+  t.true(equal(1, 1));
+  t.true(equal([1], [1]));
+  t.true(equal([{ a: 1 }], [{ a: 1 }]));
+  t.false(equal([{ a: 1 }], [{ b: 1 }]));
 });