diff --git a/src/generator.h b/src/generator.h
index af7aae1..e7d5c09 100755
--- a/src/generator.h
+++ b/src/generator.h
@@ -229,7 +229,7 @@ private:
 
 
 template<class StreamType>
-Generator<StreamType>::Generator()
+Generator<StreamType>::Generator() : empty_stream()
 {
 	output_stream = 0;
 	pattern       = 0;