diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/calendars/entities/AvailabilityTimeLine.java b/navalplanner-business/src/main/java/org/navalplanner/business/calendars/entities/AvailabilityTimeLine.java
index 7806e875a..903eff0ad 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/calendars/entities/AvailabilityTimeLine.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/calendars/entities/AvailabilityTimeLine.java
@@ -415,11 +415,9 @@ public class AvailabilityTimeLine {
     private List<Interval> getAdjacent(Interval toBeInserted) {
         final int insertionPoint = findInsertionPosition(toBeInserted);
         List<Interval> result = new ArrayList<Interval>();
-        for (int i = insertionPoint; i >= 0
-                && (i == invalids.size() || at(i).overlaps(toBeInserted)); i--) {
-            if (i < invalids.size()) {
-                result.add(at(i));
-            }
+        assert insertionPoint <= invalids.size();
+        for (int i = insertionPoint - 1; i >= 0 && at(i).overlaps(toBeInserted); i--) {
+            result.add(at(i));
         }
         for (int i = insertionPoint; i < invalids.size()
                 && at(i).overlaps(toBeInserted); i++) {
diff --git a/navalplanner-business/src/test/java/org/navalplanner/business/test/calendars/entities/AvailabilityTimeLineTest.java b/navalplanner-business/src/test/java/org/navalplanner/business/test/calendars/entities/AvailabilityTimeLineTest.java
index 704899097..d5f9b8f60 100644
--- a/navalplanner-business/src/test/java/org/navalplanner/business/test/calendars/entities/AvailabilityTimeLineTest.java
+++ b/navalplanner-business/src/test/java/org/navalplanner/business/test/calendars/entities/AvailabilityTimeLineTest.java
@@ -129,6 +129,18 @@ public class AvailabilityTimeLineTest {
         }
     }
 
+    @Test
+    public void pointsAreMergedCorrectly() {
+        AvailabilityTimeLine timeLine = AvailabilityTimeLine.allValid();
+
+        timeLine.invalidAt(new LocalDate(2010, 4, 7));
+        timeLine.invalidAt(new LocalDate(2010, 4, 11));
+        timeLine.invalidAt(new LocalDate(2010, 4, 8));
+        timeLine.invalidAt(new LocalDate(2010, 4, 6));
+
+        assertFalse(timeLine.isValid(new LocalDate(2010, 4, 8)));
+    }
+
     @Test(expected = IllegalArgumentException.class)
     public void endMustBeAfterStart() {
         AvailabilityTimeLine timeLine = AvailabilityTimeLine.allValid();