1 files changed, 5 insertions, 2 deletions

diff --git a/src/fstring.h b/src/fstring.h
index be88ec0..00bb12c 100644
--- a/src/fstring.h
+++ b/src/fstring.h
@@ -75,8 +75,11 @@ namespace Bu
                         pFirst( NULL ),
                         pLast( NULL )
                 {
-                        rSrc.flatten();
-                        append( rSrc.pFirst->pData, rSrc.nLength );
+                        if( rSrc.nLength > 0 )
+                        {
+                                rSrc.flatten();
+                                append( rSrc.pFirst->pData, rSrc.nLength );
+                        }
                 }
 
                 FBasicString( const MyType &rSrc, long nLength ) :