diff --git a/client/web/divkit/src/expressions/funcs/std.ts b/client/web/divkit/src/expressions/funcs/std.ts
index ccf59b2bc..9ff5e915a 100644
--- a/client/web/divkit/src/expressions/funcs/std.ts
+++ b/client/web/divkit/src/expressions/funcs/std.ts
@@ -16,7 +16,7 @@ import { MAX_INT, MIN_INT, toBigInt } from '../bigint';
 
 function toString(
     _ctx: EvalContext,
-    arg: IntegerValue | NumberValue | BooleanValue | ColorValue | UrlValue
+    arg: IntegerValue | NumberValue | BooleanValue | ColorValue | UrlValue | StringValue
 ): EvalValue {
     return {
         type: STRING,
@@ -190,6 +190,7 @@ export function registerStd(): void {
     registerFunc('toString', [BOOLEAN], toString);
     registerFunc('toString', [COLOR], toString);
     registerFunc('toString', [URL], toString);
+    registerFunc('toString', [STRING], toString);
 
     registerFunc('toNumber', [INTEGER], toNumber);
     registerFunc('toNumber', [STRING], toNumber);
diff --git a/test_data/expression_test_data/function_signatures_to_string.json b/test_data/expression_test_data/function_signatures_to_string.json
index 7eac1a96f..3703f0856 100644
--- a/test_data/expression_test_data/function_signatures_to_string.json
+++ b/test_data/expression_test_data/function_signatures_to_string.json
@@ -110,7 +110,8 @@
       ],
       "result_type": "string",
       "platforms": [
-        "ios"
+        "ios",
+        "web"
       ]
     },
     {
diff --git a/test_data/expression_test_data/functions_to_string.json b/test_data/expression_test_data/functions_to_string.json
index c081ddcf8..c4f3b552c 100644
--- a/test_data/expression_test_data/functions_to_string.json
+++ b/test_data/expression_test_data/functions_to_string.json
@@ -268,14 +268,15 @@
     {
       "name": "string to string => error",
       "expression": "@{toString('abc')}",
+      "deprecated": true,
+      "description": "toString(string) should be implmented",
       "expected": {
         "type": "error",
         "value": "Failed to evaluate [toString('abc')]. Function 'toString' has no matching override for given argument types: String."
       },
       "variables": [],
       "platforms": [
-        "android",
-        "web"
+        "android"
       ]
     },
     {
@@ -287,7 +288,8 @@
       },
       "variables": [],
       "platforms": [
-        "ios"
+        "ios",
+        "web"
       ]
     },
     {