diff --git a/tests/unittests/scheduler/uci_and_pucch/pucch_alloc_base_tester.h b/tests/unittests/scheduler/uci_and_pucch/pucch_alloc_base_tester.h
index a88ccf0bb3..a0f8107c5b 100644
--- a/tests/unittests/scheduler/uci_and_pucch/pucch_alloc_base_tester.h
+++ b/tests/unittests/scheduler/uci_and_pucch/pucch_alloc_base_tester.h
@@ -14,6 +14,7 @@
 
 using namespace srsran;
 
+// Number of RBs configured for the test cases.
 constexpr unsigned NOF_RBS = 52;
 
 class pucch_allocator_base_tester