diff --git a/lib/adapters/postgres.js b/lib/adapters/postgres.js
index 07edc3f2..44e5a153 100644
--- a/lib/adapters/postgres.js
+++ b/lib/adapters/postgres.js
@@ -510,7 +510,7 @@ function escape(val) {
       default: return "\\"+s;
     }
   });
-  return "'"+val+"'";
+  return "E'"+val+"'";
 };
 
 function datatype(p) {