diff --git a/plugins/jspsych-categorize-animation.js b/plugins/jspsych-categorize-animation.js
index 108d358679..4bdb43db17 100644
--- a/plugins/jspsych-categorize-animation.js
+++ b/plugins/jspsych-categorize-animation.js
@@ -44,7 +44,7 @@
                 trials[i].allow_response_before_complete = params.allow_response_before_complete || false;
                 trials[i].frame_time = params.frame_time || 500;
                 trials[i].timing_feedback_duration = params.timing_feedback_duration || 2000;
-                trials[i].timing_post_trial = params.timing_post_trial || 1000;
+                trials[i].timing_post_trial = (typeof params.timing_post_trial === 'undefined') ? 1000 : params.timing_post_trial;
                 trials[i].prompt = (typeof params.prompt === 'undefined') ? '' : params.prompt;
                 trials[i].data = (typeof params.data === 'undefined') ? {} : params.data[i];
             }
@@ -172,9 +172,13 @@
             function endTrial() {
                 clearInterval(animate_interval); // stop animation!
                 display_element.html(''); // clear everything
-                setTimeout(function() {
+                if(trial.timing_post_trial > 0){
+                    setTimeout(function() {
+                        block.next();
+                    }, trial.timing_post_trial);
+                } else {
                     block.next();
-                }, trial.timing_post_trial);
+                }
             }
         };