diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index c3f2f5a29..2639ec3aa 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -527,6 +527,12 @@ void Tokenizer::simplifyTypedef()
             tok = tok->previous();
         }
 
+        // Skip typedefs inside parentheses (#2453 and #4002)
+        if (tok->str() == "(" && tok->strAt(1) == "typedef") {
+            tok = tok->next();
+            continue;
+        }
+
         if (Token::Match(tok, "class|struct|namespace %any%") &&
             (!tok->previous() || (tok->previous() && tok->previous()->str() != "enum"))) {
             isNamespace = (tok->str() == "namespace");
@@ -551,12 +557,6 @@ void Tokenizer::simplifyTypedef()
         } else if (tok->str() != "typedef")
             continue;
 
-        // check for syntax errors
-        if (tok->previous() && tok->previous()->str() == "(") {
-            syntaxError(tok);
-            continue;
-        }
-
         // pull struct, union, enum or class definition out of typedef
         // use typedef name for unnamed struct, union, enum or class
         if (Token::Match(tok->next(), "const| struct|enum|union|class %type% {") ||
diff --git a/test/testsimplifytokens.cpp b/test/testsimplifytokens.cpp
index 237f3e292..e3f369af1 100644
--- a/test/testsimplifytokens.cpp
+++ b/test/testsimplifytokens.cpp
@@ -5382,7 +5382,7 @@ private:
         const char code[] = "void f1(typedef int x) {}\n";
         const std::string expected = "void f1 ( typedef int x ) { }";
         ASSERT_EQUALS(expected, tok(code));
-        ASSERT_EQUALS("[test.cpp:1]: (error) syntax error\n", errout.str());
+        ASSERT_EQUALS("", errout.str());
     }
 
     void simplifyTypedef77() { // ticket #2554