diff --git a/gramps2/ChangeLog b/gramps2/ChangeLog
index 83fe60032..873abdfb5 100644
--- a/gramps2/ChangeLog
+++ b/gramps2/ChangeLog
@@ -1,8 +1,11 @@
+2005-07-23  Julio Sanchez  <jsanchez@users.sourceforge.net>
+	* src/plugins/GraphViz.py: Fix computation of landscape dimensions,
+	especially when generating multiple sheets
+
 2005-07-22  Don Allingham  <don@gramps-project.org>
         * src/ImgManip.py: provide path of a thumbnail
 	* src/NavWebPage.py: add user defined header/footer, add thumbnails
 	
-2005-07-22  Julio Sanchez  <jsanchez@users.sourceforge.net>
 	* src/dates/Date_es.py: fix translation table for date qualifiers
 	* src/dates/Date_fr.py: fix translation table for date qualifiers
 	* src/plugins/DetAncestralReport.py: show events even if they have
diff --git a/gramps2/src/plugins/GraphViz.py b/gramps2/src/plugins/GraphViz.py
index 8844c4863..5dd3703a5 100644
--- a/gramps2/src/plugins/GraphViz.py
+++ b/gramps2/src/plugins/GraphViz.py
@@ -207,10 +207,16 @@ class GraphViz:
         self.f.write("center=1;\n")
         self.f.write("margin=%3.2f;\n" % self.margin_small)
         self.f.write("ratio=fill;\n")
-        self.f.write("size=\"%3.2f,%3.2f\";\n" % (
-            (self.width-self.margin*2)*self.hpages,
-            (self.height-self.margin*2)*self.vpages
-            ))
+        if self.orient == PAPER_LANDSCAPE:
+            self.f.write("size=\"%3.2f,%3.2f\";\n" % (
+                (self.height-self.margin*2)*self.hpages,
+                (self.width-self.margin*2)*self.vpages
+                ))
+        else:
+            self.f.write("size=\"%3.2f,%3.2f\";\n" % (
+                (self.width-self.margin*2)*self.hpages,
+                (self.height-self.margin*2)*self.vpages
+                ))
         self.f.write("page=\"%3.2f,%3.2f\";\n" % (self.width,self.height))
 
         if self.orient == PAPER_LANDSCAPE: