diff --git a/tests/test-capture.c b/tests/test-capture.c
index d6bd3264..0b1d1854 100644
--- a/tests/test-capture.c
+++ b/tests/test-capture.c
@@ -225,7 +225,7 @@ test_reader_basic (void)
 
   for (i = 0; i < 1000; i++)
     {
-      gint ids[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
+      guint ids[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
       SpCaptureCounterValue values[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
 
       r = sp_capture_writer_set_counters (writer, t, -1,  -1, ids, values, G_N_ELEMENTS (values));