diff --git a/infection.json5.dist b/infection.json5.dist
index cb2894c..d048bd9 100644
--- a/infection.json5.dist
+++ b/infection.json5.dist
@@ -6,7 +6,9 @@
         ]
     },
     "mutators": {
-        "@default": true
+        "@default": true,
+        "FunctionCallRemoval": false,
+        "MethodCallRemoval": false
     },
     "minMsi": 100,
     "minCoveredMsi": 100