diff --git a/nrf5/Makefile b/nrf5/Makefile
index d39dec4f26..bedf42d0fc 100644
--- a/nrf5/Makefile
+++ b/nrf5/Makefile
@@ -37,7 +37,7 @@ endif
 # qstr definitions (must come before including py.mk)
 QSTR_DEFS = qstrdefsport.h $(BUILD)/pins_qstr.h
 
-FROZEN_DIR = freeze
+FROZEN_MPY_DIR = freeze
 
 # include py core make definitions
 include ../py/py.mk