diff --git a/lib/geocoder/stores/base.rb b/lib/geocoder/stores/base.rb
index bccdf008f4d97810f64ca151b8da06067d04f013..dfe1cfd256cce9a3a0dc47143e0950e73d46348d 100644
--- a/lib/geocoder/stores/base.rb
+++ b/lib/geocoder/stores/base.rb
@@ -62,7 +62,7 @@ module Geocoder
       #
       def nearbys(radius = 20, options = {})
         return nil unless geocoded?
-        options.merge!(:exclude => self)
+        options.merge!(:exclude => self) unless send(self.class.primary_key).nil?
         self.class.near(self, radius, options)
       end