diff --git a/src/reports.test.c b/src/reports.test.c
index 1efd6369a..891f7d4af 100644
--- a/src/reports.test.c
+++ b/src/reports.test.c
@@ -496,7 +496,7 @@ void test_prepare_lighthouse_capacity(CuTest *tc) {
     CuAssertIntEquals(tc, seen_neighbour, r2->seen.mode);
     finish_reports(&ctx);
 
-    // lighthouse capacity is # of units, not people:
+    /* lighthouse capacity is # of units, not people: */
     config_set_int("rules.lighthouse.unit_capacity", 1);
     prepare_report(&ctx, u2->faction);
     CuAssertPtrEquals(tc, r1, ctx.first);