diff --git a/locale/circuitpython.pot b/locale/circuitpython.pot
index fca6c3cc9f..85d7c2f1c5 100644
--- a/locale/circuitpython.pot
+++ b/locale/circuitpython.pot
@@ -91,7 +91,6 @@ msgstr ""
 #: ports/atmel-samd/common-hal/alarm/__init__.c
 #: ports/atmel-samd/common-hal/audiobusio/I2SOut.c
 #: ports/cxd56/common-hal/analogio/AnalogOut.c ports/cxd56/common-hal/rtc/RTC.c
-#: ports/espressif/common-hal/audiobusio/I2SOut.c
 #: ports/espressif/common-hal/rtc/RTC.c
 #: ports/mimxrt10xx/common-hal/analogio/AnalogOut.c
 #: ports/mimxrt10xx/common-hal/rtc/RTC.c ports/nrf/common-hal/alarm/__init__.c
@@ -1605,7 +1604,8 @@ msgstr ""
 
 #: ports/atmel-samd/common-hal/audiobusio/PDMIn.c
 #: ports/raspberrypi/common-hal/audiobusio/PDMIn.c
-msgid "Only 8 or 16 bit mono with "
+#, c-format
+msgid "Only 8 or 16 bit mono with %dx oversampling supported."
 msgstr ""
 
 #: ports/espressif/common-hal/wifi/__init__.c
diff --git a/ports/atmel-samd/common-hal/audiobusio/PDMIn.c b/ports/atmel-samd/common-hal/audiobusio/PDMIn.c
index 717c397bbf..9054170a2a 100644
--- a/ports/atmel-samd/common-hal/audiobusio/PDMIn.c
+++ b/ports/atmel-samd/common-hal/audiobusio/PDMIn.c
@@ -157,7 +157,7 @@ void common_hal_audiobusio_pdmin_construct(audiobusio_pdmin_obj_t *self,
     }
 
     if (!(bit_depth == 16 || bit_depth == 8) || !mono || oversample != OVERSAMPLING) {
-        mp_raise_NotImplementedError(MP_ERROR_TEXT("Only 8 or 16 bit mono with " MP_STRINGIFY(OVERSAMPLING) "x oversampling is supported."));
+        mp_raise_NotImplementedError_varg(MP_ERROR_TEXT("Only 8 or 16 bit mono with %dx oversampling supported."), OVERSAMPLING);
     }
 
     turn_on_i2s();
diff --git a/ports/raspberrypi/common-hal/audiobusio/PDMIn.c b/ports/raspberrypi/common-hal/audiobusio/PDMIn.c
index 3e1c140a93..1c0f3b7002 100644
--- a/ports/raspberrypi/common-hal/audiobusio/PDMIn.c
+++ b/ports/raspberrypi/common-hal/audiobusio/PDMIn.c
@@ -57,7 +57,7 @@ void common_hal_audiobusio_pdmin_construct(audiobusio_pdmin_obj_t *self,
     bool mono,
     uint8_t oversample) {
     if (!(bit_depth == 16 || bit_depth == 8) || !mono || oversample != OVERSAMPLING) {
-        mp_raise_NotImplementedError(MP_ERROR_TEXT("Only 8 or 16 bit mono with " MP_STRINGIFY(OVERSAMPLING) "x oversampling is supported."));
+        mp_raise_NotImplementedError_varg(MP_ERROR_TEXT("Only 8 or 16 bit mono with %dx oversampling supported."), OVERSAMPLING);
     }
 
     // Use the state machine to manage pins.