diff --git a/docs/rh-log.txt b/docs/rh-log.txt
index b727cb295..919ecdfc5 100644
--- a/docs/rh-log.txt
+++ b/docs/rh-log.txt
@@ -1,4 +1,6 @@
 January 2, 2010  (Changes by Graf Zahl)
+- fixed: SBARINFO's DrawGem command accepted a size value of 0 and divided
+  by it. Reinstated the old '+1' this command had in the old code.
 - fixed: The floor waggle code used FloatBobOffsets as sine table but this
   only has 64 entries and is not precise enough. It now uses finesine instead.
 - fixed: When compositing a multipatch texture any patch that is a multpatch
diff --git a/src/g_shared/sbarinfo_commands.cpp b/src/g_shared/sbarinfo_commands.cpp
index bd1bd1478..df6bd1b4a 100644
--- a/src/g_shared/sbarinfo_commands.cpp
+++ b/src/g_shared/sbarinfo_commands.cpp
@@ -2281,7 +2281,7 @@ class CommandDrawGem : public SBarInfoCommand
 			sc.MustGetToken(TK_IntConst);
 			if(sc.Number < 0)
 				sc.ScriptError("Chain size must be a positive number.");
-			chainSize = sc.Number;
+			chainSize = sc.Number+1;
 			sc.MustGetToken(',');
 			GetCoordinates(sc, fullScreenOffsets, x, y);
 			sc.MustGetToken(';');