diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/operation/mgt/OperationManagerImpl.java b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/operation/mgt/OperationManagerImpl.java
index 5000bd56a63..e2a56958e33 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/operation/mgt/OperationManagerImpl.java
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/operation/mgt/OperationManagerImpl.java
@@ -169,7 +169,7 @@ public class OperationManagerImpl implements OperationManager {
 
             if (device == null) {
                 throw new OperationManagementException("Device not found for given device " +
-                        "Identifier:" + deviceIdentifier.getId() + " and given type" + deviceIdentifier.getType());
+                        "Identifier:" + deviceIdentifier.getId() + " and given type:" + deviceIdentifier.getType());
             }
             operations = new ArrayList<Operation>();
             dtoOperationList = operationDAO.getOperationsByDeviceAndStatus(device.getId(),