diff --git a/extmod/modure.c b/extmod/modure.c
index ae47a2129a..deb3679475 100644
--- a/extmod/modure.c
+++ b/extmod/modure.c
@@ -134,7 +134,7 @@ STATIC mp_obj_t re_split(uint n_args, const mp_obj_t *args) {
     }
 
     mp_obj_t retval = mp_obj_new_list(0, NULL);
-    const char *caps[caps_num];
+    const char **caps = alloca(caps_num * sizeof(char*));
     while (true) {
         int res = re1_5_recursiveloopprog(&self->re, &subj, caps, caps_num, false);
 
diff --git a/windows/mpconfigport.h b/windows/mpconfigport.h
index 7b23f5cb1b..5da912dec6 100644
--- a/windows/mpconfigport.h
+++ b/windows/mpconfigport.h
@@ -47,7 +47,9 @@
 #define MICROPY_STREAMS_NON_BLOCK   (1)
 #define MICROPY_OPT_COMPUTED_GOTO   (0)
 #define MICROPY_PY_BUILTINS_STR_UNICODE (1)
+#define MICROPY_PY_BUILTINS_MEMORYVIEW (1)
 #define MICROPY_PY_BUILTINS_FROZENSET (1)
+#define MICROPY_PY_BUILTINS_COMPILE (1)
 #define MICROPY_PY_SYS_EXIT         (1)
 #define MICROPY_PY_SYS_PLATFORM     "win32"
 #define MICROPY_PY_SYS_MAXSIZE      (1)
@@ -59,6 +61,8 @@
 #define MICROPY_PY_UCTYPES          (1)
 #define MICROPY_PY_UZLIB            (1)
 #define MICROPY_PY_UJSON            (1)
+#define MICROPY_PY_URE              (1)
+#define MICROPY_PY_UHEAPQ           (1)
 
 #define MICROPY_ERROR_REPORTING     (MICROPY_ERROR_REPORTING_DETAILED)
 #ifdef _MSC_VER
@@ -66,7 +70,7 @@
 #endif
 
 #define MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF   (1)
-#define MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE     (128)
+#define MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE     (256)
 
 #define MICROPY_PORT_INIT_FUNC      init()
 #define MICROPY_PORT_DEINIT_FUNC    deinit()