diff --git a/SeedDMS_Preview/Preview/Previewer.php b/SeedDMS_Preview/Preview/Previewer.php
index 970fcdb95..c32271c29 100644
--- a/SeedDMS_Preview/Preview/Previewer.php
+++ b/SeedDMS_Preview/Preview/Previewer.php
@@ -140,6 +140,7 @@ class SeedDMS_Preview_Previewer extends SeedDMS_Preview_Base {
 				try {
 					self::execWithTimeout($cmd, $this->timeout);
 				} catch(Exception $e) {
+					return false;
 				}
 			}
 			return true;