diff --git a/data-model/src/main/java/org/alfresco/util/ConfigScheduler.java b/data-model/src/main/java/org/alfresco/util/ConfigScheduler.java
index ff932c5681..78330ae0ed 100644
--- a/data-model/src/main/java/org/alfresco/util/ConfigScheduler.java
+++ b/data-model/src/main/java/org/alfresco/util/ConfigScheduler.java
@@ -60,12 +60,15 @@ public abstract class ConfigScheduler<Data>
         // Synchronized has little effect in normal operation, but on laptops that are suspended, there can be a number
         // of Threads calling execute concurrently without it, resulting in errors in the log. Theoretically possible in
         // production but not very likely.
-        public synchronized void execute(JobExecutionContext context) throws JobExecutionException
+        public void execute(JobExecutionContext context) throws JobExecutionException
         {
             JobDataMap dataMap = context.getJobDetail().getJobDataMap();
             ConfigScheduler configScheduler = (ConfigScheduler)dataMap.get(CONFIG_SCHEDULER);
-            boolean successReadingConfig = configScheduler.readConfigAndReplace(true);
-            configScheduler.changeScheduleOnStateChange(successReadingConfig);
+            synchronized (configScheduler)
+            {
+                boolean successReadingConfig = configScheduler.readConfigAndReplace(true);
+                configScheduler.changeScheduleOnStateChange(successReadingConfig);
+            }
         }
     }
 
diff --git a/repository/src/main/java/org/alfresco/transform/client/registry/CombinedConfig.java b/repository/src/main/java/org/alfresco/transform/client/registry/CombinedConfig.java
index 14caaae676..8234ad14d6 100644
--- a/repository/src/main/java/org/alfresco/transform/client/registry/CombinedConfig.java
+++ b/repository/src/main/java/org/alfresco/transform/client/registry/CombinedConfig.java
@@ -322,7 +322,7 @@ public class CombinedConfig
                 {
                     combinedTransformers.remove(indexToRemove);
                     // this may also require the current index i to be changed so we don't skip one.
-                    if (i <= indexToRemove)
+                    if (i >= indexToRemove)
                     {
                         i--;
                     }