diff --git a/libs/core/enums.d.ts b/libs/core/enums.d.ts
index c2e16d10..cf010a58 100644
--- a/libs/core/enums.d.ts
+++ b/libs/core/enums.d.ts
@@ -281,7 +281,7 @@ declare namespace motors {
     C15 = 39,  // CALLIOPE_ID_IO_P15
     //P16 = MICROBIT_ID_IO_P16,
     C19 = 24,  // MICROBIT_ID_IO_P19
-    P20 = 25,  // MICROBIT_ID_IO_P20
+    C20 = 25,  // MICROBIT_ID_IO_P20
     }