1 files changed, 2 insertions, 2 deletions
diff --git a/lib/xsd/datatypes.rb b/lib/xsd/datatypes.rb
index 03e42d21d2..bb4f53e59a 100644
--- a/lib/xsd/datatypes.rb
+++ b/lib/xsd/datatypes.rb
@@ -329,7 +329,7 @@ private
     elsif @data.infinite? == -1
       '-INF'
     else
-      sprintf("%.10g", @data)
+      sprintf("%+.10g", @data)
     end
   end
 
@@ -397,7 +397,7 @@ private
     elsif @data.infinite? == -1
       '-INF'
     else
-      sprintf("%.16g", @data)
+      sprintf("%+.16g", @data)
     end
   end
 end