diff --git a/tests/webtbs/tw2886.pp b/tests/webtbs/tw2886.pp
new file mode 100644
index 0000000000..0e77c30833
--- /dev/null
+++ b/tests/webtbs/tw2886.pp
@@ -0,0 +1,75 @@
+{ Source provided for Free Pascal Bug Report 2886 }
+{ Submitted by "Mattias Gaertner" on  2004-01-08 }
+{ e-mail: mattias@freepascal.org }
+program WrongRTTIParams;
+
+{$mode objfpc}{$H+}
+
+uses
+  Classes, SysUtils, TypInfo;
+
+type
+  TAnEvent = procedure(Sender: TObject) of object;
+
+  TMyClass = class(TPersistent)
+  private
+    FMyEvent: TAnEvent;
+  public
+    procedure ShowRTTI;
+  published
+    property MyEvent: TAnEvent read FMyEvent write FMyEvent;
+  end;
+
+{ TMyClass }
+
+procedure TMyClass.ShowRTTI;
+var
+  TypeData: PTypeData;
+  ParamCount: Integer;
+  Offset: Integer;
+  Len: Integer;
+  CurParamName: string;
+  CurTypeIdentifier: string;
+  i: Integer;
+begin
+  TypeData:=GetTypeData(GetPropInfo(Self,'MyEvent')^.PropType);
+  ParamCount:=TypeData^.ParamCount;
+  Offset:=0;
+
+  i:=0;
+//  for i:=0 to ParamCount-1 do begin
+
+    // SizeOf(TParamFlags) is 4, but the data is only 1 byte
+    Len:=1; // typinfo.pp comment is wrong: SizeOf(TParamFlags)
+    inc(Offset,Len);
+
+    // read ParamName
+    Len:=ord(TypeData^.ParamList[Offset]);
+    SetLength(CurParamName,Len);
+    if Len>0 then
+      Move(TypeData^.ParamList[Offset+1],CurParamName[1],Len);
+    inc(Offset,Len+1);
+
+    // read ParamType
+    Len:=ord(TypeData^.ParamList[Offset]);
+    SetLength(CurTypeIdentifier,Len);
+    if CurTypeIdentifier<>'' then
+      Move(TypeData^.ParamList[Offset+1],CurTypeIdentifier[1],Len);
+    inc(Offset,Len+1);
+
+    writeln('Param ',i+1,'/',ParamCount,' ',CurParamName,':',CurTypeIdentifier);
+    if (CurParamName<>'Sender')  or (CurTypeIdentifier<>'TObject') then
+      begin
+        writeln('ERROR!');
+        halt(1);
+      end;
+
+//  end;
+end;
+
+var
+  MyClass: TMyClass;
+begin
+  MyClass:=TMyClass.Create;
+  MyClass.ShowRTTI;
+end.