diff --git a/docs/rh-log.txt b/docs/rh-log.txt
index 4156eba490..7df7d9ddaf 100644
--- a/docs/rh-log.txt
+++ b/docs/rh-log.txt
@@ -1,4 +1,7 @@
 May 15, 2009  (Changes by Graf Zahl)
+- Fixed: Monsters should not check the inventory for damage absorbtion when
+  they have the MF5_NODAMAGE flag set.
+- Added patch for saving automap zoom.
 - Added ACS GetChar function.
 - Added Gez's submission for polyobjects being able to crush corpses but made
   it an explicit MAPINFO option only.
diff --git a/src/am_map.cpp b/src/am_map.cpp
index ee904508af..141497e94a 100644
--- a/src/am_map.cpp
+++ b/src/am_map.cpp
@@ -1912,4 +1912,6 @@ void AM_SerializeMarkers(FArchive &arc)
 	{
 		arc << markpoints[i].x << markpoints[i].y;
 	}
+	arc << scale_mtof;
+	arc << scale_ftom; 
 }
diff --git a/src/p_acs.cpp b/src/p_acs.cpp
index 9643c50b81..dca81de065 100644
--- a/src/p_acs.cpp
+++ b/src/p_acs.cpp
@@ -2897,7 +2897,7 @@ int DLevelScript::CallFunction(int argCount, int funcIndex, SDWORD *args)
 		case ACSF_GetChar:
 		{
 			const char *p = FBehavior::StaticLookupString(args[0]);
-			if (p != NULL && args[1] >= 0 && args[1] < strlen(p))
+			if (p != NULL && args[1] >= 0 && args[1] < int(strlen(p)))
 			{
 				return p[args[1]];
 			}
diff --git a/src/p_interaction.cpp b/src/p_interaction.cpp
index 68dbda5cc7..ca483b89dd 100644
--- a/src/p_interaction.cpp
+++ b/src/p_interaction.cpp
@@ -1156,7 +1156,7 @@ void P_DamageMobj (AActor *target, AActor *inflictor, AActor *source, int damage
 	else
 	{
 		// Armor for monsters.
-		if (!(flags & DMG_NO_ARMOR) && target->Inventory != NULL)
+		if (!(flags & DMG_NO_ARMOR) && target->Inventory != NULL && damage > 0)
 		{
 			int newdam = damage;
 			target->Inventory->AbsorbDamage (damage, mod, newdam);
diff --git a/src/version.h b/src/version.h
index ab97246861..97d42b61a9 100644
--- a/src/version.h
+++ b/src/version.h
@@ -75,7 +75,7 @@
 // SAVESIG should match SAVEVER.
 
 // MINSAVEVER is the minimum level snapshot version that can be loaded.
-#define MINSAVEVER 1583
+#define MINSAVEVER 1586
 
 #if SVN_REVISION_NUMBER < MINSAVEVER
 // Never write a savegame with a version lower than what we need