diff --git a/config/pitest-suppressions/pitest-common-suppressions.xml b/config/pitest-suppressions/pitest-common-suppressions.xml
index 6eec4a2c242..0ca675d2fba 100644
--- a/config/pitest-suppressions/pitest-common-suppressions.xml
+++ b/config/pitest-suppressions/pitest-common-suppressions.xml
@@ -1,32 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <suppressedMutations>
-  <mutation unstable="false">
-    <sourceFile>AuditEventDefaultFormatter.java</sourceFile>
-    <mutatedClass>com.puppycrawl.tools.checkstyle.AuditEventDefaultFormatter</mutatedClass>
-    <mutatedMethod>format</mutatedMethod>
-    <mutator>org.pitest.mutationtest.engine.gregor.mutators.NonVoidMethodCallMutator</mutator>
-    <description>removed call to com/puppycrawl/tools/checkstyle/AuditEventDefaultFormatter::calculateBufferLength</description>
-    <lineContent>final int bufLen = calculateBufferLength(event, severityLevelName.length());</lineContent>
-  </mutation>
-
-  <mutation unstable="false">
-    <sourceFile>AuditEventDefaultFormatter.java</sourceFile>
-    <mutatedClass>com.puppycrawl.tools.checkstyle.AuditEventDefaultFormatter</mutatedClass>
-    <mutatedMethod>format</mutatedMethod>
-    <mutator>org.pitest.mutationtest.engine.gregor.mutators.NonVoidMethodCallMutator</mutator>
-    <description>removed call to java/lang/String::length</description>
-    <lineContent>final int bufLen = calculateBufferLength(event, severityLevelName.length());</lineContent>
-  </mutation>
-
-  <mutation unstable="false">
-    <sourceFile>AuditEventDefaultFormatter.java</sourceFile>
-    <mutatedClass>com.puppycrawl.tools.checkstyle.AuditEventDefaultFormatter</mutatedClass>
-    <mutatedMethod>format</mutatedMethod>
-    <mutator>org.pitest.mutationtest.engine.gregor.mutators.experimental.ArgumentPropagationMutator</mutator>
-    <description>replaced call to com/puppycrawl/tools/checkstyle/AuditEventDefaultFormatter::calculateBufferLength with argument</description>
-    <lineContent>final int bufLen = calculateBufferLength(event, severityLevelName.length());</lineContent>
-  </mutation>
-
   <mutation unstable="false">
     <sourceFile>Checker.java</sourceFile>
     <mutatedClass>com.puppycrawl.tools.checkstyle.Checker</mutatedClass>
diff --git a/pom.xml b/pom.xml
index bec1c9d4018..9cb0c3e221f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4369,6 +4369,7 @@
                 <avoidCallsTo>com.puppycrawl.tools.checkstyle.utils.UnmodifiableCollectionUtil</avoidCallsTo>
               </avoidCallsTo>
               <excludedMethods>
+                <param>calculateBufferLength</param>
                 <!-- caching of search results, big performance optimization -->
                 <param>lazyLoad</param>
               </excludedMethods>