diff --git a/common/changes/@snowplow/browser-plugin-media/fix-disallow-empty-string-media_2026-05-19-13-41.json b/common/changes/@snowplow/browser-plugin-media/fix-disallow-empty-string-media_2026-05-19-13-41.json
new file mode 100644
index 000000000..bb82d12e2
--- /dev/null
+++ b/common/changes/@snowplow/browser-plugin-media/fix-disallow-empty-string-media_2026-05-19-13-41.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@snowplow/browser-plugin-media",
+      "comment": "Prevent empty values in media entity",
+      "type": "none"
+    }
+  ],
+  "packageName": "@snowplow/browser-plugin-media"
+}
\ No newline at end of file
diff --git a/plugins/browser-plugin-media/src/core.ts b/plugins/browser-plugin-media/src/core.ts
index 54f9da276..d1b67ea7e 100644
--- a/plugins/browser-plugin-media/src/core.ts
+++ b/plugins/browser-plugin-media/src/core.ts
@@ -16,9 +16,14 @@ export function buildMediaPlayerEvent(event: MediaEvent): SelfDescribingJson {
 }
 
 export function buildMediaPlayerEntity(mediaPlayer: MediaPlayer): SelfDescribingJson {
+  const player = { ...mediaPlayer };
+  if (player.label === '') delete player.label;
+  if (player.playerType === '') delete player.playerType;
+  if (player.quality === '') delete player.quality;
+
   return {
     schema: MEDIA_PLAYER_SCHEMA,
-    data: removeEmptyProperties(mediaPlayer),
+    data: removeEmptyProperties(player),
   };
 }
 
diff --git a/plugins/browser-plugin-media/test/api.test.ts b/plugins/browser-plugin-media/test/api.test.ts
index 2229243b9..47ab34441 100644
--- a/plugins/browser-plugin-media/test/api.test.ts
+++ b/plugins/browser-plugin-media/test/api.test.ts
@@ -316,6 +316,38 @@ describe('Media Tracking API', () => {
       ]);
     });
 
+    it('strips empty string values from optional media player fields', () => {
+      startMediaTracking({
+        id,
+        session: false,
+        player: { label: '', playerType: '', quality: '' },
+      });
+
+      trackMediaPlay({ id });
+
+      const playerContext = eventQueue[0].context[0].data;
+      expect(playerContext).not.toHaveProperty('label');
+      expect(playerContext).not.toHaveProperty('playerType');
+      expect(playerContext).not.toHaveProperty('quality');
+    });
+
+    it('preserves non-empty string values for optional media player fields', () => {
+      startMediaTracking({
+        id,
+        session: false,
+        player: { label: 'My Video', playerType: 'html5', quality: '1080p' },
+      });
+
+      trackMediaPlay({ id });
+
+      const playerContext = eventQueue[0].context[0].data;
+      expect(playerContext).toMatchObject({
+        label: 'My Video',
+        playerType: 'html5',
+        quality: '1080p',
+      });
+    });
+
     it('tracks error event', () => {
       startMediaTracking({ id, session: false });