diff --git a/dmd/cpp/calypso.cpp b/dmd/cpp/calypso.cpp
index 0c272e1b657..c701dc6d8cd 100644
--- a/dmd/cpp/calypso.cpp
+++ b/dmd/cpp/calypso.cpp
@@ -490,19 +490,6 @@ Identifier *getIdentifierOrNull(const clang::NamedDecl *D, SpecValue *spec, bool
         }
     }
 
-    if (isa<clang::RecordDecl>(D))
-    {
-        // Prefix reserved class names with 'ℂ'
-        if (ident == Id::Object || ident == Id::Throwable || ident == Id::Exception || ident == Id::Error ||
-            ident == Id::TypeInfo || ident == Id::TypeInfo_Class || ident == Id::TypeInfo_Interface ||
-            ident == Id::TypeInfo_Struct || ident == Id::TypeInfo_Pointer ||
-            ident == Id::TypeInfo_Array || ident == Id::TypeInfo_StaticArray || ident == Id::TypeInfo_AssociativeArray ||
-            ident == Id::TypeInfo_Enum || ident == Id::TypeInfo_Function || ident == Id::TypeInfo_Delegate ||
-            ident == Id::TypeInfo_Tuple || ident == Id::TypeInfo_Const || ident == Id::TypeInfo_Invariant ||
-            ident == Id::TypeInfo_Shared || ident == Id::TypeInfo_Wild || ident == Id::TypeInfo_Vector) // thanks C++...
-            needsPrefixing = true;
-    }
-
     if (needsPrefixing)
         ident = prefixConflictingIdentifier(ident);
 
diff --git a/dmd/cpp/cppaggregate.cpp b/dmd/cpp/cppaggregate.cpp
index 1daff943caa..2b9878bbef6 100644
--- a/dmd/cpp/cppaggregate.cpp
+++ b/dmd/cpp/cppaggregate.cpp
@@ -56,7 +56,8 @@ void LangPlugin::mangleAnonymousAggregate(::AggregateDeclaration* ad, OutBuffer
 StructDeclaration::StructDeclaration(Loc loc, Identifier* id,
                                      const clang::RecordDecl* RD)
 {
-    construct_StructDeclaration(this, loc, id);
+    construct_StructDeclaration(this, loc, calypso.id_Scpp);
+    this->ident = id; // bypassed the reserved struct names check
     this->RD = RD;
 }
 
@@ -68,7 +69,8 @@ StructDeclaration::StructDeclaration(const StructDeclaration& o)
 ClassDeclaration::ClassDeclaration(Loc loc, Identifier *id, BaseClasses *baseclasses,
                                    Dsymbols* members, const clang::CXXRecordDecl *RD)
 {
-    construct_ClassDeclaration(this, loc, id, baseclasses, members);
+    construct_ClassDeclaration(this, loc, calypso.id_Scpp, baseclasses, members);
+    this->ident = id; // bypassed the reserved class names check
     this->RD = RD;
 }
 
@@ -80,7 +82,8 @@ ClassDeclaration::ClassDeclaration(const ClassDeclaration& o)
 UnionDeclaration::UnionDeclaration(Loc loc, Identifier* id,
                                      const clang::RecordDecl* RD)
 {
-    construct_UnionDeclaration(this, loc, id);
+    construct_UnionDeclaration(this, loc, calypso.id_Scpp);
+    this->ident = id; // bypassed the reserved struct names check
     this->RD = RD;
 }