diff --git a/lib/templatesimplifier.cpp b/lib/templatesimplifier.cpp
index 9d149c230..6c5ad41d5 100644
--- a/lib/templatesimplifier.cpp
+++ b/lib/templatesimplifier.cpp
@@ -3494,6 +3494,14 @@ void TemplateSimplifier::simplifyTemplates(
     const std::time_t maxtime,
     bool &codeWithTemplates)
 {
+    // convert "sizeof ..." to "sizeof..."
+    for (Token *tok = mTokenList.front(); tok; tok = tok->next()) {
+        if (Token::simpleMatch(tok, "sizeof ...")) {
+            tok->str("sizeof...");
+            tok->deleteNext();
+        }
+    }
+
     // split ">>" into "> >"
     fixAngleBrackets();
 
diff --git a/test/testsimplifytemplate.cpp b/test/testsimplifytemplate.cpp
index 297b24de7..dca36f880 100644
--- a/test/testsimplifytemplate.cpp
+++ b/test/testsimplifytemplate.cpp
@@ -179,6 +179,7 @@ private:
         TEST_CASE(template139);
         TEST_CASE(template140);
         TEST_CASE(template141); // #9337
+        TEST_CASE(template142); // #9338
         TEST_CASE(template_specialization_1);  // #7868 - template specialization template <typename T> struct S<C<T>> {..};
         TEST_CASE(template_specialization_2);  // #7868 - template specialization template <typename T> struct S<C<T>> {..};
         TEST_CASE(template_enum);  // #6299 Syntax error in complex enum declaration (including template)
@@ -3274,7 +3275,7 @@ private:
                            "template < class , template < class > class , class > struct e ; "
                            "template < class f , class g , class ... h > "
                            "using i = typename e < f , g :: template fn , h ... > :: d ; "
-                           "template < class ... j > struct k : c < sizeof ... ( j ) , int > :: template fn < j ... > { } ;";
+                           "template < class ... j > struct k : c < sizeof... ( j ) , int > :: template fn < j ... > { } ;";
         ASSERT_EQUALS(exp, tok(code));
     }
 
@@ -3441,6 +3442,20 @@ private:
         ASSERT_EQUALS(exp, tok(code));
     }
 
+    void template142() { // #9338
+        const char code[] = "template <typename...> struct a;\n"
+                            "template <typename b, typename c, typename... d> struct a<b c::*, d...> {\n"
+                            "  using typename b ::e;\n"
+                            "  static_assert(e::f ? sizeof...(d) : sizeof...(d), \"\");\n"
+                            "};";
+        const char exp[] = "template < typename ... > struct a ; "
+                           "template < typename b , typename c , typename ... d > struct a < b c :: * , d ... > { "
+                           "using b :: e ; "
+                           "static_assert ( e :: f ? sizeof... ( d ) : sizeof... ( d ) , \"\" ) ; "
+                           "} ;";
+        ASSERT_EQUALS(exp, tok(code));
+    }
+
     void template_specialization_1() {  // #7868 - template specialization template <typename T> struct S<C<T>> {..};
         const char code[] = "template <typename T> struct C {};\n"
                             "template <typename T> struct S {a};\n"