diff --git a/src/opentype/tables/simple/cmap.js b/src/opentype/tables/simple/cmap.js
index d1712eb..bd7505d 100644
--- a/src/opentype/tables/simple/cmap.js
+++ b/src/opentype/tables/simple/cmap.js
@@ -26,7 +26,7 @@ class cmap extends SimpleTable {
   getSupportedEncodings() {
     return this.encodingRecords.map((r) => ({
       platformID: r.platformID,
-      encodingId: r.encodingID,
+      encodingID: r.encodingID,
     }));
   }