diff --git a/ports/unix/variants/fast/mpconfigvariant.h b/ports/unix/variants/fast/mpconfigvariant.h
index 6d73275fde..8a531b056a 100644
--- a/ports/unix/variants/fast/mpconfigvariant.h
+++ b/ports/unix/variants/fast/mpconfigvariant.h
@@ -32,5 +32,3 @@
 // 91 is a magic number proposed by @dpgeorge, which make pystone run ~ at tie
 // with CPython 3.4.
 #define MICROPY_MODULE_DICT_SIZE (91)
-
-#include "variants/DEV/mpconfigvariant.h"
diff --git a/ports/unix/variants/fast/mpconfigvariant.mk b/ports/unix/variants/fast/mpconfigvariant.mk
index d67f7c8f38..595e575645 100644
--- a/ports/unix/variants/fast/mpconfigvariant.mk
+++ b/ports/unix/variants/fast/mpconfigvariant.mk
@@ -1,6 +1,6 @@
 # build synthetically fast interpreter for benchmarking
 
-COPT += "-fno-crossjumping -O2"
+COPT += -fno-crossjumping -O2
 
 PROG = micropython-fast
 
diff --git a/ports/unix/variants/freedos/mpconfigvariant.h b/ports/unix/variants/freedos/mpconfigvariant.h
index 338b34492d..562c783ca3 100644
--- a/ports/unix/variants/freedos/mpconfigvariant.h
+++ b/ports/unix/variants/freedos/mpconfigvariant.h
@@ -36,5 +36,3 @@
 #undef _DIRENT_HAVE_D_INO
 
 #define MICROPY_USE_INTERNAL_ERRNO  (1)
-
-#include "variants/DEV/mpconfigvariant.h"