diff --git a/tests/run-tests b/tests/run-tests
index 318920b5ee..ef1368725f 100755
--- a/tests/run-tests
+++ b/tests/run-tests
@@ -2,7 +2,7 @@
 
 RM="/bin/rm -f"
 CPYTHON3=python3.3
-MP_PY=../unix/py
+MP_PY=../unix/micropython
 
 numtests=0
 numtestcases=0
diff --git a/unix/Makefile b/unix/Makefile
index 1bef083ebf..454ded79af 100644
--- a/unix/Makefile
+++ b/unix/Makefile
@@ -1,5 +1,5 @@
 # define main target
-PROG = py
+PROG = micropython
 all: $(PROG)
 
 # include py core make definitions