diff --git a/cros-disks/mount_manager.cc b/cros-disks/mount_manager.cc
index 384d391..16a697e 100644
--- a/cros-disks/mount_manager.cc
+++ b/cros-disks/mount_manager.cc
@@ -238,7 +238,7 @@
     ReserveMountPath(actual_mount_path, error_type);
     mount_point = MountPoint::CreateLeaking(base::FilePath(actual_mount_path));
   } else {
-    LOG(ERROR) << "Cannot mount " << quote(source_path) << "': " << error_type;
+    LOG(ERROR) << "Cannot mount " << quote(source_path) << ": " << error_type;
     platform_->RemoveEmptyDirectory(actual_mount_path);
     return error_type;
   }