diff --git a/src/func.d b/src/func.d
index 1a737e99e8ad..4e2897b64078 100644
--- a/src/func.d
+++ b/src/func.d
@@ -2220,6 +2220,8 @@ public:
         if (!f.deco && ident != Id.xopEquals && ident != Id.xopCmp)
         {
             sc = sc.push();
+            if (isCtorDeclaration()) // Bugzilla #15665
+                sc.flags |= SCOPEctor;
             sc.stc = 0;
             sc.linkage = linkage; // Bugzilla 8496
             type = f.semantic(loc, sc);
diff --git a/test/runnable/sctor.d b/test/runnable/sctor.d
index a4bc5532a105..d9367dc03646 100644
--- a/test/runnable/sctor.d
+++ b/test/runnable/sctor.d
@@ -336,6 +336,19 @@ void test14944()
     assert(tbl14944[0] == 1);
 }
 
+/***************************************************/
+// 15665
+
+scope class C15665 (V)
+{
+    this () {}
+}
+
+void test15665()
+{
+    scope foo = new C15665!int;
+}
+
 /***************************************************/
 
 int main()
@@ -345,6 +358,7 @@ int main()
     test11246();
     test13515();
     test14944();
+    test15665();
 
     printf("Success\n");
     return 0;