diff --git a/src/java/org/apache/cassandra/repair/RepairSession.java b/src/java/org/apache/cassandra/repair/RepairSession.java
index ea31ff3702..942049bc47 100644
--- a/src/java/org/apache/cassandra/repair/RepairSession.java
+++ b/src/java/org/apache/cassandra/repair/RepairSession.java
@@ -345,8 +345,8 @@ public class RepairSession extends WrappedRunnable implements IEndpointStateChan
         if (!endpoints.contains(endpoint))
             return;
 
-        // We want a higher confidence in the failure detection than usual because failing a repair wrongly has a high cost.
-        if (phi < 2 * DatabaseDescriptor.getPhiConvictThreshold())
+        // We want a higher confidence in the failure detection than usual because failing a repair wrongly has a high cost (CASSANDRA-7063)
+        if (phi < 100 * DatabaseDescriptor.getPhiConvictThreshold())
             return;
 
         // Though unlikely, it is possible to arrive here multiple time and we
diff --git a/src/java/org/apache/cassandra/streaming/StreamSession.java b/src/java/org/apache/cassandra/streaming/StreamSession.java
index 79ad4870b6..55e30f0fa4 100644
--- a/src/java/org/apache/cassandra/streaming/StreamSession.java
+++ b/src/java/org/apache/cassandra/streaming/StreamSession.java
@@ -616,8 +616,8 @@ public class StreamSession implements IEndpointStateChangeSubscriber, IFailureDe
         if (!endpoint.equals(peer))
             return;
 
-        // We want a higher confidence in the failure detection than usual because failing a streaming wrongly has a high cost.
-        if (phi < 2 * DatabaseDescriptor.getPhiConvictThreshold())
+        // We want a higher confidence in the failure detection than usual because failing a streaming wrongly has a high cost (CASSANDRA-7063)
+        if (phi < 100 * DatabaseDescriptor.getPhiConvictThreshold())
             return;
 
         closeSession(State.FAILED);