diff --git a/rogue4/passages.c b/rogue4/passages.c
index f9d82dc..148d46b 100644
--- a/rogue4/passages.c
+++ b/rogue4/passages.c
@@ -329,7 +329,7 @@ passnum(void)
     for (rp = rooms; rp < &rooms[MAXROOMS]; rp++)
 	for (i = 0; i < rp->r_nexits; i++)
 	{
-	    newpnum++;
+	    newpnum = TRUE;
 	    numpass(rp->r_exit[i].y, rp->r_exit[i].x);
 	}
 }
diff --git a/rogue4/potions.c b/rogue4/potions.c
index 158dfb6..7927751 100644
--- a/rogue4/potions.c
+++ b/rogue4/potions.c
@@ -246,7 +246,7 @@ turn_see(bool turn_off)
 	    if (!can_see)
 	    {
 		standend();
-		add_new++;
+		add_new = TRUE;
 	    }
 	}
     }
diff --git a/rogue4/scrolls.c b/rogue4/scrolls.c
index def132b..d6752e6 100644
--- a/rogue4/scrolls.c
+++ b/rogue4/scrolls.c
@@ -90,7 +90,7 @@ read_scroll(void)
 	     * otherwise give up
 	     */
 	    {
-		register bool appear = 0;
+		register int appear = 0;
 		coord mp;
 
 		/*