diff --git a/README.md b/README.md
index 50be2eb..fb209b8 100755
--- a/README.md
+++ b/README.md
@@ -93,6 +93,7 @@ If you need to override a specific part of the config to be different from the g
 | ------ | ------- |
 | **`X-Ass-Domain`** | Override the domain returned for the clipboard (useful for multi-domain hosts) |
 | **`X-Ass-Access`** | Override the generator used for the resource URI. Must be one of: `original`, `zws`, `gfycat`, or `random` ([see above](#access-types)) |
+| **`X-Ass-Gfycat`** | Override the length of Gfycat ID's. Defaults to `2` |
 
 ### Fancy embeds
 
diff --git a/ass.js b/ass.js
index a3df0bd..6372a01 100755
--- a/ass.js
+++ b/ass.js
@@ -133,7 +133,7 @@ function startup() {
 		};
 
 		// Save the file information
-		let resourceId = generateId(generator, resourceIdSize, gfyIdSize, req.file.originalname);
+		let resourceId = generateId(generator, resourceIdSize, req.headers['x-ass-gfycat'] || gfyIdSize, req.file.originalname);
 		data[resourceId.split('.')[0]] = req.file;
 		saveData(data);