diff --git a/src/foptiattr.cpp b/src/foptiattr.cpp
index 2880e71c..179eac13 100644
--- a/src/foptiattr.cpp
+++ b/src/foptiattr.cpp
@@ -849,7 +849,7 @@ short FOptiAttr::vga2ansi (register short color)
   // 1 1 1 0 | 1 0 1 1
   // 1 1 1 1 | 1 1 1 1
 
-  if ( color < 16 )
+  if ( ! color < 0 && color < 16 )
   {
     static const short lookup_table[] =
     {
diff --git a/test/term-attributes.cpp b/test/term-attributes.cpp
index dc4ffa6f..7a7b2bd3 100644
--- a/test/term-attributes.cpp
+++ b/test/term-attributes.cpp
@@ -169,7 +169,9 @@ class AttribDemo : public FWidget
    { }
    void onWheel (FWheelEvent* ev)
    {
-     dynamic_cast<AttribDlg*>(parentWidget())->onWheel(ev);
+     AttribDlg* p = dynamic_cast<AttribDlg*>(parentWidget());
+     if ( p )
+       p->onWheel(ev);
    }
 };
 #pragma pack(pop)