diff --git a/ports/webassembly/mpconfigport.h b/ports/webassembly/mpconfigport.h
index 0783aacbbc..b13da2991e 100644
--- a/ports/webassembly/mpconfigport.h
+++ b/ports/webassembly/mpconfigport.h
@@ -53,7 +53,6 @@
 #define MICROPY_FLOAT_IMPL          (MICROPY_FLOAT_IMPL_DOUBLE)
 #define MICROPY_USE_INTERNAL_ERRNO  (1)
 #define MICROPY_USE_INTERNAL_PRINTF (0)
-#define MICROPY_PY_BOUND_METHOD_FULL_EQUALITY_CHECK (1)
 
 #define MICROPY_EPOCH_IS_1970       (1)
 #define MICROPY_PY_ASYNCIO_TASK_QUEUE_PUSH_CALLBACK (1)