diff --git a/modules/core/src/main/java/org/apache/synapse/core/axis2/TimeoutHandler.java b/modules/core/src/main/java/org/apache/synapse/core/axis2/TimeoutHandler.java
index 202960960e..afa6982932 100644
--- a/modules/core/src/main/java/org/apache/synapse/core/axis2/TimeoutHandler.java
+++ b/modules/core/src/main/java/org/apache/synapse/core/axis2/TimeoutHandler.java
@@ -150,7 +150,7 @@ private void processCallbacks() {
                                             + getEndpointLogMessage(callback.getSynapseOutMsgCtx(),
                                             callback.getAxis2OutMsgCtx()) + ", "
                                             + getServiceLogMessage(callback.getSynapseOutMsgCtx())
-                                            + "Correlation ID : " + callback.getAxis2OutMsgCtx().getProperty(
+                                            + ", Correlation ID : " + callback.getAxis2OutMsgCtx().getProperty(
                                             CorrelationConstants.CORRELATION_ID));
                         }