diff --git a/Analysis/src/TypeVar.cpp b/Analysis/src/TypeVar.cpp
index c8767ab1..539c668f 100644
--- a/Analysis/src/TypeVar.cpp
+++ b/Analysis/src/TypeVar.cpp
@@ -1072,7 +1072,7 @@ static std::vector<TypeId> parseFormatString(TypeChecker& typechecker, const cha
                 continue;
 
             // we just ignore all characters (including flags/precision) up until first alphabetic character
-            while (i < size && !(data[i] > 0 && isalpha(data[i])))
+            while (i < size && !(data[i] > 0 && (isalpha(data[i])) || data[i] == '*'))
                 i++;
 
             if (i == size)
@@ -1080,6 +1080,8 @@ static std::vector<TypeId> parseFormatString(TypeChecker& typechecker, const cha
 
             if (data[i] == 'q' || data[i] == 's')
                 result.push_back(typechecker.stringType);
+            else if (data[i] == '*')
+                result.push_back(typechecker.errorRecoveryType(typechecker.anyType));
             else if (strchr(options, data[i]))
                 result.push_back(typechecker.numberType);
             else
diff --git a/tests/TypeInfer.builtins.test.cpp b/tests/TypeInfer.builtins.test.cpp
index 0c878023..2964f093 100644
--- a/tests/TypeInfer.builtins.test.cpp
+++ b/tests/TypeInfer.builtins.test.cpp
@@ -556,6 +556,16 @@ TEST_CASE_FIXTURE(BuiltinsFixture, "string_format_correctly_ordered_types")
     CHECK_EQ(tm->givenType, typeChecker.numberType);
 }
 
+TEST_CASE_FIXTURE(BuiltinsFixture, "string_format_tostring_specifier")
+{
+    CheckResult result = check(R"(
+        --!strict
+        string.format("%* %* %* %*", "string", 1, true, function() end)
+    )");
+
+    LUAU_REQUIRE_NO_ERRORS(result);
+}
+
 TEST_CASE_FIXTURE(BuiltinsFixture, "xpcall")
 {
     CheckResult result = check(R"(