diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/hero/spells/GuidingLight.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/hero/spells/GuidingLight.java
index 93b74be2a..3bc6bb336 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/hero/spells/GuidingLight.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/hero/spells/GuidingLight.java
@@ -86,7 +86,7 @@ public class GuidingLight extends TargetedClericSpell {
 				hero.next();
 
 				onSpellCast(tome, hero);
-				if (hero.subClass == HeroSubClass.PRIEST) {
+				if (hero.subClass == HeroSubClass.PRIEST && hero.buff(GuidingLightPriestCooldown.class) == null) {
 					Buff.prolong(hero, GuidingLightPriestCooldown.class, 100f);
 				}