diff --git a/src/synonym_index.cpp b/src/synonym_index.cpp
index 7a0293f3..73bb86be 100644
--- a/src/synonym_index.cpp
+++ b/src/synonym_index.cpp
@@ -262,9 +262,9 @@ nlohmann::json synonym_t::to_view_json() const {
     }
 
     if(!symbols.empty()) {
-        obj["symbols"] = nlohmann::json::array();
+        obj["symbols_to_index"] = nlohmann::json::array();
         for(char c: symbols) {
-            obj["symbols"].push_back(std::string(1, c));
+            obj["symbols_to_index"].push_back(std::string(1, c));
         }
     }
 
diff --git a/test/collection_synonyms_test.cpp b/test/collection_synonyms_test.cpp
index 0a5ee304..8568e834 100644
--- a/test/collection_synonyms_test.cpp
+++ b/test/collection_synonyms_test.cpp
@@ -97,9 +97,9 @@ TEST_F(CollectionSynonymsTest, SynonymParsingFromJson) {
     ASSERT_STREQ("#", synonym_plus.synonyms[1][0].c_str());
 
     nlohmann::json view_json = synonym_plus.to_view_json();
-    ASSERT_EQ(2, view_json["symbols"].size());
-    ASSERT_EQ("+", view_json["symbols"][0].get<std::string>());
-    ASSERT_EQ("#", view_json["symbols"][1].get<std::string>());
+    ASSERT_EQ(2, view_json["symbols_to_index"].size());
+    ASSERT_EQ("+", view_json["symbols_to_index"][0].get<std::string>());
+    ASSERT_EQ("#", view_json["symbols_to_index"][1].get<std::string>());
 
     // when `id` is not given
     nlohmann::json syn_json_without_id = {