diff --git a/scripts/generatePmTilesExtracts.ts b/scripts/generatePmTilesExtracts.ts
index bfb0f0e5bb..7431c5b3a2 100644
--- a/scripts/generatePmTilesExtracts.ts
+++ b/scripts/generatePmTilesExtracts.ts
@@ -56,7 +56,7 @@ class GeneratePmTilesExtracts extends Script {
     }
 
     private getFilename(z: number, x: number, y: number) {
-        return `${z}-${x}-${y}.pmitles`
+        return `${z}-${x}-${y}.pmtiles`
     }
 
     private* generateAll(): Generator<Promise<void>> {