diff --git a/activerecord/lib/arel.rb b/activerecord/lib/arel.rb
index 6263ef42ad..b7a53fd8ea 100644
--- a/activerecord/lib/arel.rb
+++ b/activerecord/lib/arel.rb
@@ -51,11 +51,8 @@ module Arel
     when Arel::Nodes::Between, Arel::Nodes::In, Arel::Nodes::NotIn, Arel::Nodes::Equality,
          Arel::Nodes::NotEqual, Arel::Nodes::LessThan, Arel::Nodes::LessThanOrEqual,
          Arel::Nodes::GreaterThan, Arel::Nodes::GreaterThanOrEqual
-      if value.left.is_a?(Arel::Attributes::Attribute)
-        yield value.left
-      elsif value.right.is_a?(Arel::Attributes::Attribute)
-        yield value.right
-      end
+      attribute_value = value.detect_attribute
+      yield attribute_value if attribute_value
     when Arel::Nodes::Or
       fetch_attribute(value.left, &block) && fetch_attribute(value.right, &block)
     when Arel::Nodes::Grouping
diff --git a/activerecord/lib/arel/nodes/binary.rb b/activerecord/lib/arel/nodes/binary.rb
index e184e99c73..258000025f 100644
--- a/activerecord/lib/arel/nodes/binary.rb
+++ b/activerecord/lib/arel/nodes/binary.rb
@@ -11,6 +11,14 @@ module Arel # :nodoc: all
         @right = right
       end
 
+      def detect_attribute
+        if self.left.is_a?(Arel::Attributes::Attribute)
+          self.left
+        elsif self.right.is_a?(Arel::Attributes::Attribute)
+          self.right
+        end
+      end
+
       def initialize_copy(other)
         super
         @left  = @left.clone if @left