diff --git a/src/ChangeLog b/src/ChangeLog
index 4f0f649919..29f5ad0f83 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,8 @@
 2006-02-22  Jürgen Spitzmüller  <j.spitzmueller@gmx.de>
 
+	* buffer.C (readHeader): also erase params.preamble in advance
+	so that an empty preamble is actually recognized (bug 2317).
+
 	* rowpainter.C (paintFromPos): ditch applyOuterFont (bug 2308).
 
 2006-02-06  Georg Baum  <Georg.Baum@post.rwth-aachen.de>
diff --git a/src/buffer.C b/src/buffer.C
index 6e6565c029..5abf1f6dda 100644
--- a/src/buffer.C
+++ b/src/buffer.C
@@ -404,6 +404,7 @@ int Buffer::readHeader(LyXLex & lex)
 
 	// Initialize parameters that may be/go lacking in header:
 	params().branchlist().clear();
+	params().preamble.erase();
 	params().options.erase();
 	params().float_placement.erase();
 	params().paperwidth.erase();