diff --git a/CHANGES b/CHANGES
index 499b9f772..b23d1a208 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,5 +1,8 @@
 Changes for SVN top of tree:
 
+ground/Pstone/pstone_1.arc: Add move_block for boats.
+Arvid Norlander 2008-05-29
+
 mapbuilding/building.arc: Add missing "damned 1" to shop tiles.
 Andreas Kirschbaum 2008-04-24
 
diff --git a/ground/Pstone/pstone_1.arc b/ground/Pstone/pstone_1.arc
index 4cdc74e43..d7aa49560 100644
--- a/ground/Pstone/pstone_1.arc
+++ b/ground/Pstone/pstone_1.arc
@@ -6,4 +6,5 @@ no_pick 1
 is_floor 1
 smoothlevel 18
 smoothface pstone_1.111 pstone_1_S.111
+move_block boat swim
 end