diff --git a/server/src/main/java/com/cloud/vm/UserVmManagerImpl.java b/server/src/main/java/com/cloud/vm/UserVmManagerImpl.java
index 28ee6556203..64ddda1c4e5 100644
--- a/server/src/main/java/com/cloud/vm/UserVmManagerImpl.java
+++ b/server/src/main/java/com/cloud/vm/UserVmManagerImpl.java
@@ -2651,6 +2651,7 @@ public class UserVmManagerImpl extends ManagerBase implements UserVmManager, Vir
             Map<String, String> customParameters = new HashMap<>();
             customParameters.put(VmDetailConstants.CPU_NUMBER, String.valueOf(newCpu));
             customParameters.put(VmDetailConstants.MEMORY, String.valueOf(newMemory));
+            customParameters.put(VmDetailConstants.CPU_SPEED, details.get(VmDetailConstants.CPU_SPEED));
             validateCustomParameters(svcOffering, customParameters);
         }
         if (VirtualMachineManager.ResourceCountRunningVMsonly.value()) {