diff --git a/q7/sysutils.py b/q7/sysutils.py
index 187e41e..d83d853 100644
--- a/q7/sysutils.py
+++ b/q7/sysutils.py
@@ -14,3 +14,9 @@ def crc32(data):
     hash_code = binascii.crc32(data)
     assert hash_code >= 0
     return hash_code
+
+def safeDiv(a, b):
+    if b == 0:
+        return 0
+    else:
+        return a / b