diff --git a/lib/workload/stateless/stacks/stacky-mcstackface/glue-constructs/clag/part_2/fastq-list-rows-event-shower/lambdas/get_sequali_stats/get_sequali_stats.py b/lib/workload/stateless/stacks/stacky-mcstackface/glue-constructs/clag/part_2/fastq-list-rows-event-shower/lambdas/get_sequali_stats/get_sequali_stats.py
index 2b92069a3..e5fee9538 100644
--- a/lib/workload/stateless/stacks/stacky-mcstackface/glue-constructs/clag/part_2/fastq-list-rows-event-shower/lambdas/get_sequali_stats/get_sequali_stats.py
+++ b/lib/workload/stateless/stacks/stacky-mcstackface/glue-constructs/clag/part_2/fastq-list-rows-event-shower/lambdas/get_sequali_stats/get_sequali_stats.py
@@ -113,7 +113,12 @@ def get_insert_size_estimate(insert_sizes: List[int]) -> float:
     """
 
     # Get the weighted average
-    # Dont include '0' insert sizes
+    # Dont include '0' insert
+
+    # Prevent ZeroDivisionError
+    if sum(insert_sizes[1:]) == 0:
+        return 0
+
     insert_size_estimate = sum(
         [
             insert_size * insert_size_count