diff --git a/scripts/generatePmTilesExtracts.ts b/scripts/generatePmTilesExtracts.ts
index 45679ae17..03464aaab 100644
--- a/scripts/generatePmTilesExtracts.ts
+++ b/scripts/generatePmTilesExtracts.ts
@@ -40,13 +40,14 @@ class GeneratePmTilesExtracts extends Script {
     private* generateField(z: number, maxzoom?: number): Generator<Promise<void>> {
         const boundary = 2 << (z - 1)
         for (let x = 0; x < boundary; x++) {
-            if (existsSync(this.targetDir + "/" + this.getFilename(z, x, boundary - 1))) {
+            const lastFileForColumn = this.getFilename(z, x, boundary - 1)
+            if (existsSync(this.targetDir + "/" + lastFileForColumn)) {
                 // Skip this column, already exists
                 console.log("Skipping column ", x, "at zoom", z)
                 this.skipped += boundary
                 continue
             } else {
-                console.log("Starting column", x, "at zoom", z)
+                console.log("Starting column", x, "at zoom", z, "as", lastFileForColumn, "does not exist")
             }
 
             for (let y = 0; y < boundary; y++) {