diff --git a/awsapi/src/com/cloud/bridge/service/core/s3/S3Engine.java b/awsapi/src/com/cloud/bridge/service/core/s3/S3Engine.java
index e1ccd4c4d1f..7beb012d4b7 100644
--- a/awsapi/src/com/cloud/bridge/service/core/s3/S3Engine.java
+++ b/awsapi/src/com/cloud/bridge/service/core/s3/S3Engine.java
@@ -1126,7 +1126,7 @@ public class S3Engine {
         SBucketVO sbucket = bucketDao.getByName( bucketName );
         if (sbucket == null) {
             response.setResultCode(404);
-            response.setResultDescription("<Code>Bucket dosen't exists</Code><Message>Bucket " + bucketName + " does not exist</Message>");
+            response.setResultDescription("<Code>Bucket doesn't exists</Code><Message>Bucket " + bucketName + " does not exist</Message>");
             return response;
         }
 
diff --git a/server/src/com/cloud/network/ExternalFirewallDeviceManagerImpl.java b/server/src/com/cloud/network/ExternalFirewallDeviceManagerImpl.java
index ac00bc14d36..4a90a77f428 100644
--- a/server/src/com/cloud/network/ExternalFirewallDeviceManagerImpl.java
+++ b/server/src/com/cloud/network/ExternalFirewallDeviceManagerImpl.java
@@ -725,7 +725,7 @@ public abstract class ExternalFirewallDeviceManagerImpl extends AdapterBase impl
             }
         }
         if (lowestVlanTag == null) {
-            throw new InvalidParameterValueException ("The vlan tag dose not belong to any of the existing vlan ranges");
+            throw new InvalidParameterValueException ("The vlan tag does not belong to any of the existing vlan ranges");
         }
         return vlanTag - lowestVlanTag;
     }
diff --git a/server/src/com/cloud/network/NetworkServiceImpl.java b/server/src/com/cloud/network/NetworkServiceImpl.java
index ac2ac456897..7653a0816f0 100755
--- a/server/src/com/cloud/network/NetworkServiceImpl.java
+++ b/server/src/com/cloud/network/NetworkServiceImpl.java
@@ -2529,7 +2529,7 @@ public class NetworkServiceImpl extends ManagerBase implements  NetworkService {
         }
 
         if (temp == 0){
-            throw new InvalidParameterValueException("The vlan range you are trying to delete dose not exist.");
+            throw new InvalidParameterValueException("The vlan range you are trying to delete does not exist.");
         }
         if(existingRanges.get(i).first() > existingRanges.get(i).second()){
             existingRanges.remove(i);
diff --git a/server/src/com/cloud/network/guru/GuestNetworkGuru.java b/server/src/com/cloud/network/guru/GuestNetworkGuru.java
index 92607e2fcd0..291e3ccbc77 100755
--- a/server/src/com/cloud/network/guru/GuestNetworkGuru.java
+++ b/server/src/com/cloud/network/guru/GuestNetworkGuru.java
@@ -284,7 +284,7 @@ public abstract class GuestNetworkGuru extends AdapterBase implements NetworkGur
             }
         }
         if (lowestVlanTag == null) {
-            throw new InvalidParameterValueException ("The vlan tag dose not belong to any of the existing vlan ranges");
+            throw new InvalidParameterValueException ("The vlan tag does not belong to any of the existing vlan ranges");
         }
         return vlanTag - lowestVlanTag;
     }