diff --git a/inc/hgl/io/JavaInputStream.h b/inc/hgl/io/JavaInputStream.h
index db317ba..619f37b 100644
--- a/inc/hgl/io/JavaInputStream.h
+++ b/inc/hgl/io/JavaInputStream.h
@@ -63,7 +63,7 @@ namespace hgl
 
             bool    readUTF             (UTF16String &str)
             {
-                return in?in->ReadUTF8ShortString(str);
+                return in?in->ReadUTF8ShortString(str):false;
             }
         };//class JavaInputStream
     }//namespace io
diff --git a/inc/hgl/io/JavaOutputStream.h b/inc/hgl/io/JavaOutputStream.h
index bf2d91d..c93ff68 100644
--- a/inc/hgl/io/JavaOutputStream.h
+++ b/inc/hgl/io/JavaOutputStream.h
@@ -54,8 +54,8 @@ namespace hgl
                 return out?out->WriteUTF16BEChars(wstr,count):false;
             }
 
-            bool    writeUTF            (const UTF8String   &str){return out?out->WriteUTF8ShortString(str);}
-            bool    writeUTF            (const UTF16String  &str){return out?out->WriteUTF8ShortString(str);}
+            bool    writeUTF            (const UTF8String   &str){return out?out->WriteUTF8ShortString(str):false;}
+            bool    writeUTF            (const UTF16String  &str){return out?out->WriteUTF8ShortString(str):false;}
         };//class JavaOutputStream
     }//namespace io
 }//namespace hgl