diff --git a/rugged-core/src/test/java/org/orekit/rugged/core/duvenhage/MinMaxTreeTileTest.java b/rugged-core/src/test/java/org/orekit/rugged/core/duvenhage/MinMaxTreeTileTest.java
index be1e219410fc3de0d3bdd44bd0362a36827d6c22..af10df106f1374492abeff4ba1c0ef14fc56913e 100644
--- a/rugged-core/src/test/java/org/orekit/rugged/core/duvenhage/MinMaxTreeTileTest.java
+++ b/rugged-core/src/test/java/org/orekit/rugged/core/duvenhage/MinMaxTreeTileTest.java
@@ -62,6 +62,10 @@ public class MinMaxTreeTileTest {
         maxTreeField.setAccessible(true);
         Assert.assertEquals(2187, ((double[]) maxTreeField.get(tile)).length);
 
+        for (int i = 0; i < tile.getLatitudeRows(); ++i) {
+            Assert.assertEquals(32 * (i / 32) + 16, tile.getMergingRow(i, 0));
+        }
+
     }
 
     @Test