diff --git a/deviceinfo_schema.toml b/deviceinfo_schema.toml
index 12db306e1..10edf579c 100644
--- a/deviceinfo_schema.toml
+++ b/deviceinfo_schema.toml
@@ -394,7 +394,7 @@ datatype = "integer"
 default_value = 512
 
 [variable.flash.sd_embed_firmware]
-description = "A comma-separated list of binary:offset (where binary is under /usr/share)"
+description = "A comma-separated list of binary:offset (where binary is under /usr/share and can be optionally globbed to match exactly one firmware binary)"
 
 [variable.flash.sd_embed_firmware_step_size]
 description = "The number of bytes for each increment of the offset specified in `sd_embed_firmware`"