diff --git a/lib/prawn/grid.rb b/lib/prawn/grid.rb
index 80cd9e268..7413e68b8 100644
--- a/lib/prawn/grid.rb
+++ b/lib/prawn/grid.rb
@@ -145,12 +145,12 @@ def subdivide(total, num, gutter)
 
       def apply_gutter(options)
         if options.key?(:gutter)
-          @gutter = Float(options[:gutter])
+          @gutter = Float(options[:gutter] || 0.0)
           @row_gutter = @gutter
           @column_gutter = @gutter
         else
-          @row_gutter = Float(options[:row_gutter])
-          @column_gutter = Float(options[:column_gutter])
+          @row_gutter = Float(options[:row_gutter] || 0.0)
+          @column_gutter = Float(options[:column_gutter] || 0.0)
           @gutter = 0
         end
       end