1 files changed, 2 insertions, 0 deletions
diff --git a/py/obj.h b/py/obj.h
index e7c044df0f..7c83715111 100644
--- a/py/obj.h
+++ b/py/obj.h
@@ -568,7 +568,9 @@ typedef struct {
 } mp_bound_slice_t;
 
 void mp_seq_multiply(const void *items, uint item_sz, uint len, uint times, void *dest);
+#if MICROPY_PY_BUILTINS_SLICE
 bool mp_seq_get_fast_slice_indexes(machine_uint_t len, mp_obj_t slice, mp_bound_slice_t *indexes);
+#endif
 #define mp_seq_copy(dest, src, len, item_t) memcpy(dest, src, len * sizeof(item_t))
 #define mp_seq_cat(dest, src1, len1, src2, len2, item_t) { memcpy(dest, src1, (len1) * sizeof(item_t)); memcpy(dest + (len1), src2, (len2) * sizeof(item_t)); }
 bool mp_seq_cmp_bytes(int op, const byte *data1, uint len1, const byte *data2, uint len2);