diff --git a/scripts/generatePmTilesExtracts.ts b/scripts/generatePmTilesExtracts.ts
index dc6135a89b..af7ece37ca 100644
--- a/scripts/generatePmTilesExtracts.ts
+++ b/scripts/generatePmTilesExtracts.ts
@@ -41,7 +41,7 @@ class GeneratePmTilesExtracts extends Script {
         const boundary = 2 << (z - 1)
         for (let x = 0; x < boundary; x++) {
             console.log("Checking ", this.getFilename(z, x, boundary - 1))
-            if (existsSync(this.getFilename(z, x, boundary - 1))) {
+            if (existsSync(this.targetDir + "/" + this.getFilename(z, x, boundary - 1))) {
                 // Skip this column, already exists
                 console.log("Skipping column ", x, "at zoom", z)
                 continue