diff --git a/engine/orchestration/src/main/java/com/cloud/vm/VirtualMachineManagerImpl.java b/engine/orchestration/src/main/java/com/cloud/vm/VirtualMachineManagerImpl.java
index 58e9d26339fb..28e6d796f87f 100755
--- a/engine/orchestration/src/main/java/com/cloud/vm/VirtualMachineManagerImpl.java
+++ b/engine/orchestration/src/main/java/com/cloud/vm/VirtualMachineManagerImpl.java
@@ -1321,7 +1321,7 @@ public void orchestrateStart(final String vmUuid, final Map<VirtualMachineProfil
 
                             if (!changeState(vm, Event.OperationSucceeded, destHostId, work, Step.Done)) {
                                 logger.error("Unable to transition to a new state. VM uuid: {}, VM oldstate: {}, Event: {}", vm, vm.getState(), Event.OperationSucceeded);
-                                throw new ConcurrentOperationException("Failed to deploy VM"+ vm);
+                                throw new ConcurrentOperationException(String.format("Failed to deploy VM %s", vm));
                             }
 
                             final GPUDeviceTO gpuDevice = startAnswer.getVirtualMachine().getGpuDevice();
@@ -2125,7 +2125,7 @@ private void advanceStop(final VMInstanceVO vm, final boolean cleanUpEvenIfUnabl
             HostVO host = _hostDao.findById(hostId);
             if (!cleanUpEvenIfUnableToStop && vm.getState() == State.Running && host.getResourceState() == ResourceState.PrepareForMaintenance) {
                 logger.debug("Host is in PrepareForMaintenance state - Stop VM operation on the VM: {} is not allowed", vm);
-                throw new CloudRuntimeException(String.format("Stop VM operation on the VM id%s is not allowed as host is preparing for maintenance mode", vm));
+                throw new CloudRuntimeException(String.format("Stop VM operation on the VM %s is not allowed as host is preparing for maintenance mode", vm));
             }
         }
 
diff --git a/plugins/storage/volume/scaleio/src/main/java/org/apache/cloudstack/storage/datastore/manager/ScaleIOSDCManagerImpl.java b/plugins/storage/volume/scaleio/src/main/java/org/apache/cloudstack/storage/datastore/manager/ScaleIOSDCManagerImpl.java
index b9965d951099..f1177acc7b4a 100644
--- a/plugins/storage/volume/scaleio/src/main/java/org/apache/cloudstack/storage/datastore/manager/ScaleIOSDCManagerImpl.java
+++ b/plugins/storage/volume/scaleio/src/main/java/org/apache/cloudstack/storage/datastore/manager/ScaleIOSDCManagerImpl.java
@@ -203,7 +203,7 @@ public String prepareSDC(Host host, DataStore dataStore) {
     }
 
     private String prepareSDCOnHost(Host host, DataStore dataStore, String systemId) {
-        logger.debug("Preparing SDC on the host {}", host.toString());
+        logger.debug("Preparing SDC on the host {}", host);
         Map<String,String> details = new HashMap<>();
         details.put(ScaleIOGatewayClient.STORAGE_POOL_SYSTEM_ID, systemId);
         PrepareStorageClientCommand cmd = new PrepareStorageClientCommand(((PrimaryDataStore) dataStore).getPoolType(), dataStore.getUuid(), details);