diff --git a/src/ifcclash/ifcclash.py b/src/ifcclash/ifcclash.py
index 2e8210dc0d..b986aac169 100644
--- a/src/ifcclash/ifcclash.py
+++ b/src/ifcclash/ifcclash.py
@@ -281,6 +281,8 @@ class IfcClasher:
                 print(f"Skipping clash set [{clash_set['name']}] since it contains no clash results.")
                 continue
             clashes = clash_set["clashes"]
+            if len(clashes) == 0:
+                continue
             count_of_input_clashes += len(clashes)
 
             positions = []