diff --git a/apps/files_external/lib/dropbox.php b/apps/files_external/lib/dropbox.php
index 6e464f4e28715037cb1653fc6d9056e8af74ab10..5f603b7fe43d20415a62dfbfd4cb11d42deaac89 100755
--- a/apps/files_external/lib/dropbox.php
+++ b/apps/files_external/lib/dropbox.php
@@ -269,7 +269,11 @@ class Dropbox extends \OC\Files\Storage\Common {
 	}
 
 	public function touch($path, $mtime = null) {
-		return false;
+		if ($this->file_exists($path)) {
+			return false;
+		} else {
+			$this->file_put_contents($path, '');
+		}
 	}
 
 }
diff --git a/apps/files_external/lib/swift.php b/apps/files_external/lib/swift.php
index 86938ef3bb9c59c82c450c057a61e045adc2941c..b615d24ce76c2b3dc13459767a139e92deaf8d9b 100644
--- a/apps/files_external/lib/swift.php
+++ b/apps/files_external/lib/swift.php
@@ -364,7 +364,7 @@ class Swift extends \OC\Files\Storage\Common {
 					'X-Object-Meta-Timestamp' => $mtime
 				)
 			);
-			$object->Update($settings);
+			return $object->Update($settings);
 		} else {
 			$object = $this->container->DataObject();
 			if (is_null($mtime)) {
@@ -377,7 +377,7 @@ class Swift extends \OC\Files\Storage\Common {
 					'X-Object-Meta-Timestamp' => $mtime
 				)
 			);
-			$object->Create($settings);
+			return $object->Create($settings);
 		}
 	}
 
diff --git a/apps/files_external/lib/webdav.php b/apps/files_external/lib/webdav.php
index 0837222e51103f78c1dfcf44d2a45410804f53c3..02f6cb5fc4f73720f1dca49f87ca4b0c2d2fb48f 100644
--- a/apps/files_external/lib/webdav.php
+++ b/apps/files_external/lib/webdav.php
@@ -234,6 +234,7 @@ class DAV extends \OC\Files\Storage\Common{
 		} else {
 			$this->file_put_contents($path, '');
 		}
+		return true;
 	}
 
 	public function getFile($path, $target) {