diff --git a/firmware_configurations/README.md b/firmware_configurations/README.md
index 0034166e7..0fdd97ed0 100644
--- a/firmware_configurations/README.md
+++ b/firmware_configurations/README.md
@@ -8,19 +8,23 @@ Remember to update this README when uploading new firmware configurations!
 Update the following table with the information about your mod:
 - Your name
 - A link to your sub-folder
-- A short description of your firmware
-- The printer compatibility. Use `:heavy_check_mark:` for :heavy_check_mark: and `:x:` for :x:
+- A short description of your firmware config
+- The printer compatibility. Use `:heavy_check_mark:` for :heavy_check_mark:,`:x:` for :x: and `:grey_question:` for :grey_question:
 
 like so:
 `
 | Creator | [Config Title](link) | Description | :x: | :x: | :x: |`
 
+## Updating the compatibility matrix
+
+If your mod is lacking a column in the compatibility matrix, feel free to submit a PR to get it updated!
+
 ---
 
 | Creator | Config title | Description | V1.6 | V2.1 | V2.2 |
 |---------|--------------|-------------|------|------|------|
-| Chron   | [SKR 1.3 TMC2208 UART Config](./klipper/Chron) | Configuration for SKR 1.3 TMC2208 UART | :x: | :heavy_check_mark: | :heavy_check_mark: |
-| Danowar  | [FYSETC F6 1.3 Klipper Config](./klipper/Danowar/FYSETC_F6_V1.3_Klipper_Config) | Klipper config for a FYSETC F6 350 build. | :x: | :heavy_check_mark: | :heavy_check_mark: |
-| exquyre | [Einsy + RAMPS Combo](./klipper/exquyre/einsy%2Bramps) | Klipper config for 1 einsy and 1 RAMPS | :x: | :heavy_check_mark: | :heavy_check_mark: |
+| Chron   | [SKR 1.3 TMC2208 UART Config](./klipper/Chron) | Configuration for SKR 1.3 TMC2208 UART | :x: | :heavy_check_mark: | :grey_question: |
+| Danowar  | [FYSETC F6 1.3 Klipper Config](./klipper/Danowar/FYSETC_F6_V1.3_Klipper_Config) | Klipper config for a FYSETC F6 350 build. | :x: | :heavy_check_mark: | :grey_question: |
+| exquyre | [Einsy + RAMPS Combo](./klipper/exquyre/einsy%2Bramps) | Klipper config for 1 einsy and 1 RAMPS | :x: | :heavy_check_mark: | :grey_question: |
 
 ---