diff --git a/doc/src/sgml/lobj.sgml b/doc/src/sgml/lobj.sgml
index a11514c03810cba2bf8f18dd7d949a061f00b478..c6c63d66bea0f9d0f591fea3eef17c9f14ded38e 100644
--- a/doc/src/sgml/lobj.sgml
+++ b/doc/src/sgml/lobj.sgml
@@ -25,7 +25,7 @@
      stored within the <ProductName>Postgres</ProductName> database. It causes  
      considerable confusion among users. As a result, we only 
      support large objects as data stored within  the  <ProductName>Postgres</ProductName>
-     database  in  <ProductName>PostgreSQL</ProductName>.  Even  though is is slower to
+     database  in  <ProductName>PostgreSQL</ProductName>.  Even  though it is slower to
      access, it provides stricter data  integrity.
      For historical reasons, this storage scheme is referred to as 
      Inversion large objects. (We will use  Inversion  and  large