diff --git a/src/collection.cpp b/src/collection.cpp
index ae0c68fb..aaa51843 100644
--- a/src/collection.cpp
+++ b/src/collection.cpp
@@ -112,7 +112,7 @@ Option<doc_seq_id_t> Collection::to_doc(const std::string & json_str, nlohmann::
     }
 
     if(document.count("id") != 0 && id != "" && document["id"] != id) {
-        return Option<doc_seq_id_t>(400, "The `id` of the resource does not match the `id` on the JSON body.");
+        return Option<doc_seq_id_t>(400, "The `id` of the resource does not match the `id` in the JSON body.");
     }
 
     if(document.count("id") == 0 && !id.empty()) {
diff --git a/test/collection_test.cpp b/test/collection_test.cpp
index ba8ff13a..efdc33b8 100644
--- a/test/collection_test.cpp
+++ b/test/collection_test.cpp
@@ -2616,7 +2616,7 @@ TEST_F(CollectionTest, UpdateDocument) {
     add_op = coll1->add(doc5.dump(), UPSERT, "799");
     ASSERT_FALSE(add_op.ok());
     ASSERT_EQ(400, add_op.code());
-    ASSERT_STREQ("The `id` of the resource does not match the `id` on the JSON body.", add_op.error().c_str());
+    ASSERT_STREQ("The `id` of the resource does not match the `id` in the JSON body.", add_op.error().c_str());
 
     // passing an empty id should not succeed
     nlohmann::json doc6;