diff --git a/php/get.php b/php/get.php
index d2a9584..4b573d3 100644
--- a/php/get.php
+++ b/php/get.php
@@ -86,8 +86,9 @@ function create_thumbnail(string $category, string $file): string | null {
 	log_print("generating thumbnail for $original_file");
 	$output = shell_exec(THUMBNAIL_SCRIPT." '$original_file' '$thumbnail_file' 2>&1");
 	if ($output) log_print($output);
-	if ($output === false) {
+	if (substr_count(strtolower((string) $output), "error")) {
 		log_error("Thumbnail failed");
+		log_print(ROOT_URL.IMG_DIR.$path);
 		return ROOT_URL.IMG_DIR.$path;
 	}