diff --git a/benchmarks/event_counter.h b/benchmarks/event_counter.h
index ee37f08..509488b 100644
--- a/benchmarks/event_counter.h
+++ b/benchmarks/event_counter.h
@@ -130,7 +130,7 @@ struct event_collector {
   LinuxEvents<PERF_TYPE_HARDWARE> linux_events;
 
   event_collector()
-      : linux_events(std::array<unsigned long long, 4>{
+      : linux_events(std::array<unsigned long long, 4 /*event_counter_types_size*/>{
             PERF_COUNT_HW_CPU_CYCLES, PERF_COUNT_HW_INSTRUCTIONS,
             PERF_COUNT_HW_BRANCH_INSTRUCTIONS, // Retired branch instructions
             PERF_COUNT_HW_BRANCH_MISSES}) {}
diff --git a/tests/basictest.cpp b/tests/basictest.cpp
index 93a7a28..95592e1 100644
--- a/tests/basictest.cpp
+++ b/tests/basictest.cpp
@@ -69,7 +69,7 @@ template <typename T> std::string fHexAndDec(T v) {
   return ss.str();
 }
 
-const std::string round_name(int const d) {
+const std::string_view round_name(int const d) {
   switch (d) {
   case FE_UPWARD:
     return "FE_UPWARD";
@@ -107,9 +107,9 @@ TEST_CASE("system_info") {
 #endif
 #ifdef FASTFLOAT_IS_BIG_ENDIAN
 #if FASTFLOAT_IS_BIG_ENDIAN
-  printf("big endian\n");
+  std::cout << "big endian" << std::endl;
 #else
-  printf("little endian\n");
+  std::cout << "little endian" << std::endl;
 #endif
 #endif
 #ifdef FASTFLOAT_32BIT