diff --git a/cpp/ViolaJones.hpp b/cpp/ViolaJones.hpp
index ed663cb..b525fa9 100644
--- a/cpp/ViolaJones.hpp
+++ b/cpp/ViolaJones.hpp
@@ -9,7 +9,7 @@ template <typename T>
 bool unit_test_cpu_vs_gpu(const np::Array<T>& cpu, const np::Array<T>& gpu) noexcept {
 	if (cpu.shape != gpu.shape) {
 #if __DEBUG
-		fprintf(stderr, "Inequal shape !\n");
+		fprintf(stderr, "Unequal shape !\n");
 #endif
 		return false;
 	}
@@ -32,7 +32,7 @@ template <typename T>
 bool unit_test_argsort_2d(const np::Array<T>& a, const np::Array<uint16_t>& indices) noexcept {
 	if (a.shape != indices.shape) {
 #if __DEBUG
-		fprintf(stderr, "Inequal shape !\n");
+		fprintf(stderr, "Unequal shape !\n");
 #endif
 		return false;
 	}
@@ -60,8 +60,8 @@ T benchmark_function(const char* step_name, const F& fnc, Args &&...args) noexce
 #endif
 	const std::chrono::system_clock::time_point start = perf_counter_ns();
 	const T res = fnc(std::forward<Args>(args)...);
-	const long long timespent = duration_ns(perf_counter_ns() - start);
-	printf("| %-49s | %18s | %-29s |\n", step_name, thousand_sep(timespent).c_str(), format_time_ns(timespent).c_str());
+	const long long time_spent = duration_ns(perf_counter_ns() - start);
+	printf("| %-49s | %18s | %-29s |\n", step_name, thousand_sep(time_spent).c_str(), format_time_ns(time_spent).c_str());
 	return res;
 }
 
@@ -73,8 +73,8 @@ void benchmark_function_void(const char* step_name, const F& fnc, Args &&...args
 #endif
 	const std::chrono::system_clock::time_point start = perf_counter_ns();
 	fnc(std::forward<Args>(args)...);
-	const long long timespent = duration_ns(perf_counter_ns() - start);
-	printf("| %-49s | %18s | %-29s |\n", step_name, thousand_sep(timespent).c_str(), format_time_ns(timespent).c_str());
+	const long long time_spent = duration_ns(perf_counter_ns() - start);
+	printf("| %-49s | %18s | %-29s |\n", step_name, thousand_sep(time_spent).c_str(), format_time_ns(time_spent).c_str());
 }
 
 template <typename T, typename F, typename... Args>
diff --git a/cpp/data.hpp b/cpp/data.hpp
index 29c2c7a..464e43a 100644
--- a/cpp/data.hpp
+++ b/cpp/data.hpp
@@ -534,7 +534,7 @@ namespace np {
 	// bool Array<T>::operator==(const Array& other) const noexcept {
 	// 	if (shape != other.shape)
 	// 		return false;
-	// 	const size_t lenght = np::prod(shape);
+	// 	const size_t length = np::prod(shape);
 	// 	for(size_t i = 0; i < length; ++i)
 	// 		if (data[i] != other[i])
 	// 			return false;