diff --git a/locale/circuitpython.pot b/locale/circuitpython.pot
index f58a84917b..54a836cf18 100644
--- a/locale/circuitpython.pot
+++ b/locale/circuitpython.pot
@@ -3380,7 +3380,7 @@ msgstr ""
 
 #: shared-bindings/bitmaptools/__init__.c
 #, c-format
-msgid "invalid bits_per_pixel %d, must be, 1, 4, 8, 16, 24, or 32"
+msgid "invalid bits_per_pixel %d, must be, 1, 2, 4, 8, 16, 24, or 32"
 msgstr ""
 
 #: shared-bindings/bitmaptools/__init__.c
diff --git a/shared-bindings/bitmaptools/__init__.c b/shared-bindings/bitmaptools/__init__.c
index bd15985838..4e14a061f0 100644
--- a/shared-bindings/bitmaptools/__init__.c
+++ b/shared-bindings/bitmaptools/__init__.c
@@ -563,7 +563,7 @@ STATIC mp_obj_t bitmaptools_readinto(size_t n_args, const mp_obj_t *pos_args, mp
         case 32:
             break;
         default:
-            mp_raise_ValueError_varg(translate("invalid bits_per_pixel %d, must be, 1, 4, 8, 16, 24, or 32"), bits_per_pixel);
+            mp_raise_ValueError_varg(translate("invalid bits_per_pixel %d, must be, 1, 2, 4, 8, 16, 24, or 32"), bits_per_pixel);
     }
 
     bool reverse_pixels_in_element = args[ARG_reverse_pixels_in_element].u_bool;