diff --git a/classes.h b/classes.h
index c9f48064..f7a54a83 100644
--- a/classes.h
+++ b/classes.h
@@ -91,6 +91,7 @@ static const flagtype IF_PROTECTION = Flag(2);
 static const flagtype IF_EMPATHY = Flag(3);
 static const flagtype IF_RANGED = Flag(4);
 static const flagtype IF_SHMUPLIFE = Flag(5);
+static const flagtype IF_REVIVAL = Flag(6);
 
 struct itemtype {
   char  glyph;
diff --git a/flags.cpp b/flags.cpp
index 0246f358..bea7b2d8 100644
--- a/flags.cpp
+++ b/flags.cpp
@@ -129,6 +129,7 @@ ITEMFLAGCHECK(itemBurns, !(flag & IF_FIREPROOF))
 ITEMFLAGCHECK(isProtectionOrb, flag & IF_PROTECTION)
 ITEMFLAGCHECK(isEmpathyOrb, flag & IF_EMPATHY)
 ITEMFLAGCHECK(isRangedOrb, flag & IF_RANGED)
+ITEMFLAGCHECK(isRevivalOrb, flag & IF_REVIVAL)
 
 eMonster movegroup(eMonster m);
 
@@ -262,10 +263,6 @@ bool haveRangedOrb() {
     items[itOrbMorph] || items[itOrbPhasing];
   }
 
-bool isRevivalOrb(eItem i) {
-  return i == itOrbLife || i == itOrbFriend || i == itOrbUndeath;
-  }
-
 bool isFriendlyGhost(eMonster m) {
   return m == moFriendlyGhost || (markEmpathy(itOrbAether) && isFriendly(m));
   }