diff --git a/shared-bindings/audiobusio/I2SOut.c b/shared-bindings/audiobusio/I2SOut.c
index 3713caeb7b..e0d46de8e1 100644
--- a/shared-bindings/audiobusio/I2SOut.c
+++ b/shared-bindings/audiobusio/I2SOut.c
@@ -97,7 +97,7 @@
 //|         ...
 STATIC mp_obj_t audiobusio_i2sout_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
     #if !CIRCUITPY_AUDIOBUSIO_I2SOUT
-    mp_raise_NotImplementedError(translate("I2SOut not available"));
+    mp_raise_NotImplementedError(translate("%q"), MP_QSTR_I2SOut);
     return NULL;                // Not reachable.
     #else
     enum { ARG_bit_clock, ARG_word_select, ARG_data, ARG_left_justified };
diff --git a/shared-bindings/audiobusio/PDMIn.c b/shared-bindings/audiobusio/PDMIn.c
index b6a316fadb..f26a5f4cc2 100644
--- a/shared-bindings/audiobusio/PDMIn.c
+++ b/shared-bindings/audiobusio/PDMIn.c
@@ -94,7 +94,7 @@
 //|     ...
 STATIC mp_obj_t audiobusio_pdmin_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
     #if !CIRCUITPY_AUDIOBUSIO_PDMIN
-    mp_raise_NotImplementedError(translate("PDMIn not available"));
+    mp_raise_NotImplementedError(translate("%q"), MP_QSTR_PDMIn);
     #else
     enum { ARG_clock_pin, ARG_data_pin, ARG_sample_rate, ARG_bit_depth, ARG_mono, ARG_oversample, ARG_startup_delay };
     static const mp_arg_t allowed_args[] = {