diff --git a/quests/hendel/pre_acid b/quests/hendel/pre_acid
index cbbdc90d0..c9b41bff0 100644
--- a/quests/hendel/pre_acid
+++ b/quests/hendel/pre_acid
@@ -7,6 +7,7 @@ enter_x 14
 enter_y 12
 msg
 Created:  1993-12-07 Chris Hendelberg (hendel@ecst.csuchico.edu)
+Modified: 2008-06-06 Arvid Norlander
 endmsg
 end
 arch pstone_1
@@ -1014,6 +1015,10 @@ arch bwall_0
 x 4
 y 24
 end
+arch pstone_1
+x 4
+y 25
+end
 arch bwall_0
 x 4
 y 25
@@ -3056,6 +3061,10 @@ arch bwall_0
 x 13
 y 23
 end
+arch pstone_1
+x 13
+y 24
+end
 arch bwall_0
 x 13
 y 24