diff --git a/provision.inc b/provision.inc
index fd4f705e95ecf5927b7e8a03c827fd8695cd2cd9..daea97cfc2d4535bc0f4adcabc8d5b3299c64497 100644
--- a/provision.inc
+++ b/provision.inc
@@ -442,8 +442,25 @@ function provision_backend_invoke($target, $command, $arguments = array(), $data
  *   $process = drush_get_context('provision_process_result');
  *   print $process->getExitCode();
  *
+ * @param string $command
+ *   The command to run
+ * @param null $cwd
+ *   The directory to run the command in.
+ * @param string $label
+ *   A string to display above the command block in the front-end.
+ * @param array $env
+ *   A list of environment variables to set for the process.
+ * @param bool $log_output
+ *   Whether or not to send output to drush_log in real time.
+ * @param null $error_message
+ *   The error message to show after a failure. Defaults to NULL because the UI turning red and the error output is usually enough.
+ * @param bool $throw_drush_error
+ *   Whether or not to throw a drush error if the process fails. Defaults to TRUE.
+ *
+ * @return string|void
+ *   The output or error output of the command.
  */
-function provision_process($command, $cwd = null, $label = 'Process', $env = array(), $log_output = TRUE, $error_message = NULL) {
+function provision_process($command, $cwd = null, $label = 'Process', $env = array(), $log_output = TRUE, $error_message = NULL, $throw_drush_error = TRUE) {
   if (empty($command)) {
     return;
   }
@@ -481,7 +498,10 @@ function provision_process($command, $cwd = null, $label = 'Process', $env = arr
   }
   else {
     drush_log('', 'p_error');
-    drush_set_error('PROVISION_PROCESS_ERROR', dt($error_message));
+
+    if ($throw_drush_error) {
+      drush_set_error('PROVISION_PROCESS_ERROR', dt($error_message));
+    }
     return $process->getErrorOutput();
   }
 }