diff --git a/include/sqlpp11/data_types/text/result_field.h b/include/sqlpp11/data_types/text/result_field.h
index 80f16632..0c0f0d0b 100644
--- a/include/sqlpp11/data_types/text/result_field.h
+++ b/include/sqlpp11/data_types/text/result_field.h
@@ -47,7 +47,7 @@ namespace sqlpp
       size_t len{};
       target._bind_text_result(index, &text, &len);
       this->_value = {text, len};
-      this->_is_null = (len == 0);
+      this->_is_null = (text == nullptr);
     }
 
     template <typename Target>
@@ -57,7 +57,7 @@ namespace sqlpp
       size_t len{};
       target._post_bind_text_result(index, &text, &len);
       this->_value = {text, len};
-      this->_is_null = (len == 0);
+      this->_is_null = (text == nullptr);
     }
   };