diff --git a/xwiki-platform-core/xwiki-platform-mailsender/pom.xml b/xwiki-platform-core/xwiki-platform-mailsender/pom.xml
index 5f1407426515..78fe5e2aa92f 100644
--- a/xwiki-platform-core/xwiki-platform-mailsender/pom.xml
+++ b/xwiki-platform-core/xwiki-platform-mailsender/pom.xml
@@ -32,7 +32,9 @@
   <description>XWiki Platform - Mail Sender</description>
   <properties>
     <xwiki.jacoco.instructionRatio>0.23</xwiki.jacoco.instructionRatio>
-    <xwiki.pitest.mutationThreshold>44</xwiki.pitest.mutationThreshold>
+    <!-- TODO: Put back threshold of 44% when
+         https://github.com/STAMP-project/pitest-descartes/issues/62#issuecomment-585359062 is fixed -->
+    <xwiki.pitest.mutationThreshold>9</xwiki.pitest.mutationThreshold>
   </properties>
   <dependencies>
     <dependency>