diff --git a/Source/objects.cpp b/Source/objects.cpp
index 73a344c90..4ed03c5a8 100644
--- a/Source/objects.cpp
+++ b/Source/objects.cpp
@@ -3592,13 +3592,13 @@ void OperateShrine(int pnum, int i, int sType)
 		NetSendCmdParam2(FALSE, CMD_PLROPOBJ, pnum, i);
 }
 
-void OperateSkelBook(int pnum, int i, BOOL sendmsg)
+void OperateSkelBook(int pnum, int i, DIABOOL sendmsg)
 {
 	if (object[i]._oSelFlag != 0) {
 		if (!deltaload)
 			PlaySfxLoc(IS_ISCROL, object[i]._ox, object[i]._oy);
-		object[i]._oAnimFrame += 2;
 		object[i]._oSelFlag = 0;
+		object[i]._oAnimFrame += 2;
 		if (!deltaload) {
 			SetRndSeed(object[i]._oRndSeed);
 			if (random_(161, 5))
diff --git a/Source/objects.h b/Source/objects.h
index 548745368..ccf591512 100644
--- a/Source/objects.h
+++ b/Source/objects.h
@@ -125,7 +125,7 @@ void OperatePedistal(int pnum, int i);
 void TryDisarm(int pnum, int i);
 int ItemMiscIdIdx(int imiscid);
 void OperateShrine(int pnum, int i, int sType);
-void OperateSkelBook(int pnum, int i, BOOL sendmsg);
+void OperateSkelBook(int pnum, int i, DIABOOL sendmsg);
 void OperateBookCase(int pnum, int i, DIABOOL sendmsg);
 void OperateDecap(int pnum, int i, DIABOOL sendmsg);
 void OperateArmorStand(int pnum, int i, DIABOOL sendmsg);