diff --git a/src/main/java/io/lettuce/core/protocol/CommandHandler.java b/src/main/java/io/lettuce/core/protocol/CommandHandler.java
index 289c2d2a57..fec2ab017b 100644
--- a/src/main/java/io/lettuce/core/protocol/CommandHandler.java
+++ b/src/main/java/io/lettuce/core/protocol/CommandHandler.java
@@ -743,10 +743,9 @@ private String logPrefix() {
             return logPrefix;
         }
 
-        StringBuilder buffer = new StringBuilder(64);
-        buffer.append('[').append(ChannelLogDescriptor.logDescriptor(channel)).append(", ").append("chid=0x")
-                .append(Long.toHexString(commandHandlerId)).append(']');
-        return logPrefix = buffer.toString();
+        String buffer = "[" + ChannelLogDescriptor.logDescriptor(channel) + ", " + "chid=0x"
+                + Long.toHexString(commandHandlerId) + ']';
+        return logPrefix = buffer;
     }
 
     private static long nanoTime() {
diff --git a/src/main/java/io/lettuce/core/protocol/ConnectionWatchdog.java b/src/main/java/io/lettuce/core/protocol/ConnectionWatchdog.java
index a6b44ad569..2f3f5734b2 100644
--- a/src/main/java/io/lettuce/core/protocol/ConnectionWatchdog.java
+++ b/src/main/java/io/lettuce/core/protocol/ConnectionWatchdog.java
@@ -143,6 +143,7 @@ public void channelActive(ChannelHandlerContext ctx) throws Exception {
 
         channel = ctx.channel();
         reconnectScheduleTimeout = null;
+        logPrefix = null;
         remoteAddress = channel.remoteAddress();
         logPrefix = null;
         logger.debug("{} channelActive()", logPrefix());
@@ -343,10 +344,8 @@ private String logPrefix() {
             return logPrefix;
         }
 
-        StringBuilder buffer = new StringBuilder(64);
-        buffer.append('[').append(ChannelLogDescriptor.logDescriptor(channel)).append(", last known addr=")
-                .append(remoteAddress).append(']');
-        return logPrefix = buffer.toString();
+        String
+        buffer= "[" +ChannelLogDescriptor.logDescriptor(channel)+", last known addr="+remoteAddress+']';
+        return logPrefix = buffer;
     }
-
 }
diff --git a/src/main/java/io/lettuce/core/protocol/DefaultEndpoint.java b/src/main/java/io/lettuce/core/protocol/DefaultEndpoint.java
index 4989e5a9a6..c5513927fe 100644
--- a/src/main/java/io/lettuce/core/protocol/DefaultEndpoint.java
+++ b/src/main/java/io/lettuce/core/protocol/DefaultEndpoint.java
@@ -686,10 +686,9 @@ protected String logPrefix() {
             return logPrefix;
         }
 
-        StringBuffer buffer = new StringBuffer(64);
-        buffer.append('[').append(ChannelLogDescriptor.logDescriptor(channel)).append(", ").append("epid=0x")
-                .append(Long.toHexString(endpointId)).append(']');
-        return logPrefix = buffer.toString();
+        String buffer = "[" + ChannelLogDescriptor.logDescriptor(channel) + ", " + "epid=0x" + Long.toHexString(endpointId)
+                + ']';
+        return logPrefix = buffer;
     }
 
     private class ListenerSupport {