diff --git a/src/main/java/org/olat/ims/qti21/model/xml/AssessmentHtmlBuilder.java b/src/main/java/org/olat/ims/qti21/model/xml/AssessmentHtmlBuilder.java
index 5b5c9caff705a1cef7f90173b6b58174fd8f86bf..66337fd5ad624df0390d50fc79892f9892d7fb54 100644
--- a/src/main/java/org/olat/ims/qti21/model/xml/AssessmentHtmlBuilder.java
+++ b/src/main/java/org/olat/ims/qti21/model/xml/AssessmentHtmlBuilder.java
@@ -342,6 +342,7 @@ public class AssessmentHtmlBuilder {
 						String parameters = content.substring(start + startScript.length(), end);
 						translateToObject(parameters);
 					}
+					scriptBuffer = new StringBuilder();
 					video = false;
 				}
 				return;