diff --git a/packages/kbn-esql-validation-autocomplete/src/validation/__tests__/functions.test.ts b/packages/kbn-esql-validation-autocomplete/src/validation/__tests__/functions.test.ts
index 9cf211315757e..85a6fadcc8f5c 100644
--- a/packages/kbn-esql-validation-autocomplete/src/validation/__tests__/functions.test.ts
+++ b/packages/kbn-esql-validation-autocomplete/src/validation/__tests__/functions.test.ts
@@ -260,7 +260,7 @@ describe('function validation', () => {
         // date
         await expectErrors('FROM a_index | EVAL TEST(NOW())', []);
         await expectErrors('FROM a_index | EVAL TEST(1.)', [
-          'Argument of [test] must be [date], found value [1] type [decimal]',
+          'Argument of [test] must be [date], found value [1.] type [decimal]',
         ]);
       });
     });
diff --git a/packages/kbn-esql-validation-autocomplete/src/validation/validation.ts b/packages/kbn-esql-validation-autocomplete/src/validation/validation.ts
index 23508eeedd234..2790a8a14a3b1 100644
--- a/packages/kbn-esql-validation-autocomplete/src/validation/validation.ts
+++ b/packages/kbn-esql-validation-autocomplete/src/validation/validation.ts
@@ -112,7 +112,7 @@ function validateFunctionLiteralArg(
           values: {
             name: astFunction.name,
             argType: argDef.type as string,
-            value: typeof actualArg.value === 'number' ? actualArg.value : String(actualArg.value),
+            value: actualArg.text,
             givenType: actualArg.literalType,
           },
           locations: actualArg.location,