diff --git a/tests/JFJochReceiverProcessingTest.cpp b/tests/JFJochReceiverProcessingTest.cpp
index 8bae482a..801baebd 100644
--- a/tests/JFJochReceiverProcessingTest.cpp
+++ b/tests/JFJochReceiverProcessingTest.cpp
@@ -977,7 +977,9 @@ TEST_CASE("JFJochIntegrationTest_ZMQ_lysozyme_spot_and_index_grid", "[JFJochRece
     CHECK(receiver_out.status.images_sent == experiment.GetImageNum());
     CHECK(!receiver_out.status.cancelled);
 
-    REQUIRE(receiver_out.scan_result.images.size() == 9);
+    // 3x3 grid = 9 cells, but only 7 images collected; the two uncollected
+    // placeholder rows (grid indices 5 and 8) are dropped from scan_result.
+    REQUIRE(receiver_out.scan_result.images.size() == 7);
     CHECK(receiver_out.scan_result.images[0].number == 0);
     CHECK(receiver_out.scan_result.images[1].number == 3);
     CHECK(receiver_out.scan_result.images[3].number == 1);