diff --git a/CHANGELOG.md b/CHANGELOG.md
index 11589cc..d6451c7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ All notable changes to the **HbM RPG v3** Foundry VTT system.
 The format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/) and
 this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.5.2] - 2026-10-26
+
+### Fixed
+- A character with the discipline Magia Sakralna - Egzorcyzmy (`sacredExorcism`) is now treated as a Sacred Magic caster in the spell discipline gate. Before, it only matched its own id, so exorcists failed the requirement for Sacred spells. The match is one-way: a plain Sacred mage is not an exorcist.
+
 ## [1.5.1] - 2026-10-22
 
 ### Added
diff --git a/package.json b/package.json
index c2bae20..a233b1c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hbm-rpg-v3-foundry",
-  "version": "1.5.1",
+  "version": "1.5.2",
   "description": "Foundry VTT system for Homebrew Magic: Role Playing Game v3",
   "private": true,
   "type": "module",
diff --git a/src/logic/spell-validation.ts b/src/logic/spell-validation.ts
index 168ed27..d7df853 100644
--- a/src/logic/spell-validation.ts
+++ b/src/logic/spell-validation.ts
@@ -41,7 +41,7 @@ function actorHasTalent(actor: CastableActor, talentId: string): boolean {
   return false;
 }
 
-function matchDiscipline(disciplineId: string, targetId: string): boolean {
+export function matchDiscipline(disciplineId: string, targetId: string): boolean {
   const d1 = disciplineId.toLowerCase().trim();
   const d2 = targetId.toLowerCase().trim();
   if (d1 === d2) return true;
@@ -52,6 +52,8 @@ function matchDiscipline(disciplineId: string, targetId: string): boolean {
     abyssprimal: ['abyssprimal', 'magia otchłani', 'primal', 'eldritch', 'eldritch magic', 'abyss - primal', 'magia otchłani - pierwotna magia', 'pierwotna magia'],
     witch: ['witch', 'wiedźmia magia', 'witch magic', 'dzika wiedźmia magia', 'wildwitch'],
     blood: ['blood', 'magia krwi', 'blood magic'],
+    sacred: ['sacred', 'magia sakralna', 'sacred magic'],
+    sacredexorcism: ['sacredexorcism', 'magia sakralna - egzorcyzmy', 'egzorcyzmy', 'exorcism', 'exorcisms', 'sacred - exorcisms'],
   };
 
   let key1: string | null = null;
@@ -63,6 +65,8 @@ function matchDiscipline(disciplineId: string, targetId: string): boolean {
   }
 
   if (key1 && key2 && key1 === key2) return true;
+  // Egzorcyzmy are a sub-discipline of Magia Sakralna: an exorcist counts as Sacred, not the other way round.
+  if (key1 === 'sacredexorcism' && key2 === 'sacred') return true;
   return false;
 }
 
diff --git a/system.json b/system.json
index 8df3091..49fa97e 100644
--- a/system.json
+++ b/system.json
@@ -2,7 +2,7 @@
   "id": "hbm-rpg-v3",
   "title": "Homebrew Magic: RPG v3",
   "description": "System Foundry VTT dla Homebrew Magic: Role Playing Game v3 - autorska gra fabularna z mechaniką puli kości d6 (TS - Trudność:Sukcesy).",
-  "version": "1.5.1",
+  "version": "1.5.2",
   "manifest": "https://vtt-content.octoturge.com/packages/system/hbm-rpg-v3.json",
   "download": "https://vtt-content.octoturge.com/packages/system/hbm-rpg-v3-v1.5.0.zip",
   "compatibility": {
diff --git a/tests/logic/spell-validation.test.ts b/tests/logic/spell-validation.test.ts
new file mode 100644
index 0000000..3fdb6ba
--- /dev/null
+++ b/tests/logic/spell-validation.test.ts
@@ -0,0 +1,19 @@
+import { describe, it, expect } from 'vitest';
+import { matchDiscipline } from '../../src/logic/spell-validation';
+
+describe('matchDiscipline: Magia Sakralna - Egzorcyzmy', () => {
+  it('an exorcist counts as Sacred Magic for casting', () => {
+    expect(matchDiscipline('sacredExorcism', 'sacred')).toBe(true);
+    expect(matchDiscipline('Magia Sakralna - Egzorcyzmy', 'sacred')).toBe(true);
+    expect(matchDiscipline('Egzorcyzmy', 'Magia Sakralna')).toBe(true);
+  });
+
+  it('a plain Sacred mage is not an exorcist', () => {
+    expect(matchDiscipline('sacred', 'sacredExorcism')).toBe(false);
+    expect(matchDiscipline('Magia Sakralna', 'egzorcyzmy')).toBe(false);
+  });
+
+  it('does not leak into other disciplines', () => {
+    expect(matchDiscipline('sacredExorcism', 'witch')).toBe(false);
+  });
+});