diff --git a/lib/templatesimplifier.cpp b/lib/templatesimplifier.cpp
index c59fdf288f7..d28b350ea8b 100644
--- a/lib/templatesimplifier.cpp
+++ b/lib/templatesimplifier.cpp
@@ -439,7 +439,7 @@ unsigned int TemplateSimplifier::templateParameters(const Token *tok)
         // Skip variadic types (Ticket #5774, #6059, #6172)
         if (Token::simpleMatch(tok, "...")) {
             if ((tok->previous()->isName() && !Token::Match(tok->tokAt(-2), "<|,|::")) ||
-                (!tok->previous()->isName() && !Token::Match(tok->previous(), ">|&|&&|*")))
+                (!tok->previous()->isName() && !Token::Match(tok->previous(), ">|&|&&|*|)")))
                 return 0; // syntax error
             tok = tok->next();
             if (!tok)
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index d5c770169e4..2edc79ab655 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -4697,6 +4697,23 @@ class TestTokenizer : public TestFixture {
                           tokenizeAndStringify(code));
             ASSERT_EQUALS("", errout_str());
         }
+        {
+            const char code[] = "namespace N {\n" // #15192
+                                "    template <typename... Ts>\n"
+                                "    struct S {};\n"
+                                "}\n"
+                                "template <typename... Ts, typename = N::S<decltype(Ts())...>>\n"
+                                "void f() {}\n";
+            ASSERT_EQUALS("namespace N {\n"
+                          "template < typename ... Ts >\n"
+                          "struct S { } ;\n"
+                          "}\n"
+                          "template < typename ... Ts , typename = N :: S < decltype ( Ts ( ) ) ... > >\n"
+                          "void f ( ) { }",
+                          tokenizeAndStringify(code));
+            ASSERT_EQUALS("", errout_str());
+        }
+
     }
 
     void cpp03template1() {