diff --git a/.hgignore b/.hgignore
index 1988831c5bb9e261ca1038e90c0188c8cfcfba7e..842a80e6470aaa4d60cc766c2e6c4dce53d74f4c 100644
--- a/.hgignore
+++ b/.hgignore
@@ -2,6 +2,7 @@
 syntax: glob
 
 *~
+*.swp
 
 # switch to regexp syntax.
 syntax: regexp
@@ -21,4 +22,4 @@ syntax: glob
 .project
 .cproject
 syntax: regexp
-^Debug$
\ No newline at end of file
+^Debug$