diff --git a/src/backend/sources/PlexApiSource.ts b/src/backend/sources/PlexApiSource.ts
index 570416c5..6f0fc4e0 100644
--- a/src/backend/sources/PlexApiSource.ts
+++ b/src/backend/sources/PlexApiSource.ts
@@ -232,22 +232,22 @@ export default class PlexApiSource extends MemoryPositionalSource {
 
         if(state.play !== undefined) {
             const allowedLibraries = this.getAllowedLibraries();
-            if(allowedLibraries.length > 0 && !allowedLibraries.some(x => state.play.meta.library.toLocaleLowerCase().includes(x.name.toLocaleLowerCase()))) {
+            if(allowedLibraries.length > 0 && !allowedLibraries.some(x => state.play.meta.library.toLocaleLowerCase() === x.name.toLocaleLowerCase())) {
                 return `media not included in librariesAllow`;
             }
             
             if(allowedLibraries.length === 0) {
                 const blockedLibraries = this.getBlockedLibraries();
                 if(blockedLibraries.length > 0) {
-                    const blockedLibrary = blockedLibraries.find(x => state.play.meta.library.toLocaleLowerCase().includes(x.name.toLocaleLowerCase()));
+                    const blockedLibrary = blockedLibraries.find(x => state.play.meta.library.toLocaleLowerCase() === x.name.toLocaleLowerCase());
                     if(blockedLibrary !== undefined) {
                         return `media included in librariesBlock '${blockedLibrary.name}'`;
                     }
                 }
-    
-                if(!this.getValidLibraries().some(x => state.play.meta.library === x.name)) {
-                    return `media not included in a valid library`;
-                }
+            }
+
+             if(!this.getValidLibraries().some(x => state.play.meta.library === x.name)) {
+                return `media not included in a valid library`;
             }
         }
 
diff --git a/src/backend/tests/plex/plex.test.ts b/src/backend/tests/plex/plex.test.ts
index 4d814f23..c26e70ce 100644
--- a/src/backend/tests/plex/plex.test.ts
+++ b/src/backend/tests/plex/plex.test.ts
@@ -134,18 +134,27 @@ describe("Plex API Source", function() {
 
             it('Should allow activity based on libraries allow', async function () {
                 const s = await createSource({...defaultCreds, librariesAllow: ['music']});
+                s.libraries.push({name: 'SomeOtherLibrary', collectionType: 'artist', uuid: '43543'});
+                s.libraries.push({name: 'Study Music', collectionType: 'artist', uuid: '435437'});
+                s.libraries.push({name: 'Music', collectionType: 'artist', uuid: '4354378'});
     
                 expect(s.isActivityValid(validPlayerState, validSession)).to.be.true;
                 expect(s.isActivityValid(playWithMeta({library: 'SomeOtherLibrary'}), nowPlayingSession({librarySectionTitle: 'SomeOtherLibrary'}))).to.not.be.true;
+                expect(s.isActivityValid(playWithMeta({library: 'Study Music'}), nowPlayingSession({librarySectionTitle: 'Study Music'}))).to.not.be.true;
+                expect(s.isActivityValid(playWithMeta({library: 'Music'}), nowPlayingSession({librarySectionTitle: 'Music'}))).to.be.true;
                 await s.destroy();
             });
     
             it('Should disallow activity based on libraries block', async function () {
                 const s = await createSource({...defaultCreds, librariesBlock: ['music']});
                 s.libraries.push({name: 'CoolVideos', collectionType: 'artist', uuid: '43543'});
+                s.libraries.push({name: 'Study Music', collectionType: 'artist', uuid: '435437'});
+                s.libraries.push({name: 'Music', collectionType: 'artist', uuid: '4354378'});
     
                 expect(s.isActivityValid(validPlayerState, validSession)).to.not.be.true;
                 expect(s.isActivityValid(playWithMeta({library: 'CoolVideos'}), nowPlayingSession({librarySectionTitle: 'CoolVideos'}))).to.be.true;
+                expect(s.isActivityValid(playWithMeta({library: 'Study Music'}), nowPlayingSession({librarySectionTitle: 'Study Music'}))).to.be.true;
+                expect(s.isActivityValid(playWithMeta({library: 'Music'}), nowPlayingSession({librarySectionTitle: 'Music'}))).to.not.be.true;
                 await s.destroy();
             });