diff --git a/ps-trace_path_changed.py b/ps-trace_path_changed.py
index 5084c61..302ce2b 100644
--- a/ps-trace_path_changed.py
+++ b/ps-trace_path_changed.py
@@ -634,6 +634,8 @@ def getPaths(fld, ddf):
         return temp
 
     probDf['P'] = probDf['P'].round(2)
+    # Replace invalid values with NaN, then convert to integers
+    probDf['asn'] = pd.to_numeric(probDf['asn'], errors='coerce')
     probDf['asn'] = probDf['asn'].astype('int')
 
     alarmsData = []