diff --git a/app/src/test/java/sudoku/SolverTest.java b/app/src/test/java/sudoku/SolverTest.java
index 3a5833b..7000140 100644
--- a/app/src/test/java/sudoku/SolverTest.java
+++ b/app/src/test/java/sudoku/SolverTest.java
@@ -34,7 +34,8 @@ class SolverTest {
         assertTrue(solver.isLegal(0, 0, 1));
         solver.set(0, 0, 1);
 
-        IntStream.range(0, 9).forEach(i -> {
+        // Start from one, since setting the same value is legal
+        IntStream.range(1, 9).forEach(i -> {
             assertFalse(solver.isLegal(0, i, 1));
             assertFalse(solver.isLegal(i, 0, 1));
         });