diff --git a/lib/symboldatabase.cpp b/lib/symboldatabase.cpp
index 994513c09..83366a8ba 100644
--- a/lib/symboldatabase.cpp
+++ b/lib/symboldatabase.cpp
@@ -4648,7 +4648,7 @@ const Token * Scope::addEnum(const Token * tok, bool isCpp)
         if (tok2 == end) {
             tok2 = tok2->next();
 
-            if (tok2 && tok2->str() != ";")
+            if (tok2 && tok2->str() != ";" && (isCpp || tok2->str() != ")"))
                 tok2 = nullptr;
         } else
             tok2 = nullptr;
diff --git a/test/testsymboldatabase.cpp b/test/testsymboldatabase.cpp
index 4015bd0c9..3887b1b9c 100644
--- a/test/testsymboldatabase.cpp
+++ b/test/testsymboldatabase.cpp
@@ -376,6 +376,7 @@ private:
         TEST_CASE(enum7);
         TEST_CASE(enum8);
         TEST_CASE(enum9);
+        TEST_CASE(enum10); // #11001
 
         TEST_CASE(sizeOfType);
 
@@ -5307,6 +5308,19 @@ private:
         ASSERT_EQUALS(X1->value, 8);
     }
 
+    void enum10() { // #11001
+        GET_SYMBOL_DB_C("int b = sizeof(enum etag {X, Y});\n");
+        ASSERT(db != nullptr);
+        const Enumerator *X = db->scopeList.back().findEnumerator("X");
+        ASSERT(X);
+        ASSERT(X->value_known);
+        ASSERT_EQUALS(X->value, 0);
+        const Enumerator *Y = db->scopeList.back().findEnumerator("Y");
+        ASSERT(Y);
+        ASSERT(Y->value_known);
+        ASSERT_EQUALS(Y->value, 1);
+    }
+
     void sizeOfType() {
         // #7615 - crash in Symboldatabase::sizeOfType()
         GET_SYMBOL_DB("enum e;\n"