diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/resourceload/LoadPeriodGenerator.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/resourceload/LoadPeriodGenerator.java
index 106470a04..d29153d3f 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/resourceload/LoadPeriodGenerator.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/resourceload/LoadPeriodGenerator.java
@@ -134,7 +134,7 @@ abstract class LoadPeriodGenerator {
                 allocationsOnInterval);
     }
 
-    private boolean overlaps(LoadPeriodGenerator other) {
+    boolean overlaps(LoadPeriodGenerator other) {
         return (start.compareTo(other.end) < 0 && other.start
                 .compareTo(this.end) < 0);
     }
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/resourceload/ResourceLoadModel.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/resourceload/ResourceLoadModel.java
index f92e03509..7c7964ac3 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/resourceload/ResourceLoadModel.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/resourceload/ResourceLoadModel.java
@@ -237,15 +237,14 @@ class PeriodsBuilder {
         ListIterator<LoadPeriodGenerator> iterator = loadPeriodsGenerators
                 .listIterator();
         while (iterator.hasNext()) {
-            LoadPeriodGenerator current = iterator.next();
-            if (iterator.hasNext()) {
+            final LoadPeriodGenerator current = findNextOneOverlapping(iterator);
+            if (current != null) {
+                rewind(iterator, current);
                 iterator.remove();
                 LoadPeriodGenerator next = iterator.next();
                 iterator.remove();
                 List<LoadPeriodGenerator> generated = current.join(next);
-                final LoadPeriodGenerator nextOne = generated.size() > 1 ? generated
-                        .get(1)
-                        : generated.get(0);
+                final LoadPeriodGenerator positionToComeBack = generated.get(0);
                 List<LoadPeriodGenerator> sortedByStartDate = mergeListsKeepingByStartSortOrder(
                         generated, loadPeriodsGenerators.subList(iterator
                                 .nextIndex(), loadPeriodsGenerators.size()));
@@ -253,11 +252,26 @@ class PeriodsBuilder {
                         - generated.size();
                 removeNextElements(iterator, takenFromRemaining);
                 addAtCurrentPosition(iterator, sortedByStartDate);
-                rewind(iterator, nextOne);
+                rewind(iterator, positionToComeBack);
             }
         }
     }
 
+    private LoadPeriodGenerator findNextOneOverlapping(
+            ListIterator<LoadPeriodGenerator> iterator) {
+        while (iterator.hasNext()) {
+            LoadPeriodGenerator current = iterator.next();
+            if (!iterator.hasNext()) {
+                return null;
+            }
+            LoadPeriodGenerator next = peekNext(iterator);
+            if (current.overlaps(next)) {
+                return current;
+            }
+        }
+        return null;
+    }
+
     private void addAtCurrentPosition(
             ListIterator<LoadPeriodGenerator> iterator,
             List<LoadPeriodGenerator> sortedByStartDate) {