diff --git a/lib/liquid/range_lookup.rb b/lib/liquid/range_lookup.rb
index 8da022dc..ae6fc28c 100644
--- a/lib/liquid/range_lookup.rb
+++ b/lib/liquid/range_lookup.rb
@@ -16,8 +16,8 @@ module Liquid
     end
 
     def evaluate(context)
-      start_int = Utils.to_integer(context.evaluate(@start_obj))
-      end_int = Utils.to_integer(context.evaluate(@end_obj))
+      start_int = Utils.to_integer(context.evaluate(@start_obj), true)
+      end_int = Utils.to_integer(context.evaluate(@end_obj), true)
       start_int..end_int
     end
   end
diff --git a/lib/liquid/utils.rb b/lib/liquid/utils.rb
index 7725ff87..490b0494 100644
--- a/lib/liquid/utils.rb
+++ b/lib/liquid/utils.rb
@@ -33,13 +33,14 @@ module Liquid
       segments
     end
 
-    def self.to_integer(num)
+    def self.to_integer(num, accept_invalid = false)
       return num if num.is_a?(Integer)
       num = num.to_s
       begin
         Integer(num)
       rescue ::ArgumentError
-        raise Liquid::ArgumentError, "invalid integer"
+        raise Liquid::ArgumentError, "invalid integer" unless accept_invalid
+        0
       end
     end