diff --git a/src/ergodox.cpp b/src/ergodox.cpp
index fe2e094..8f14cb9 100644
--- a/src/ergodox.cpp
+++ b/src/ergodox.cpp
@@ -51,6 +51,9 @@ Ergodox& Ergodox::init(
 	return Instance;
 }
 
+
+// Instance is a static function variable,
+// and will be deleted at end of program.
 Ergodox::~Ergodox() {
 	close();
 	hid_exit();
diff --git a/src/signal_processing/fft.hpp b/src/signal_processing/fft.hpp
index 738f7ec..b51e8c0 100644
--- a/src/signal_processing/fft.hpp
+++ b/src/signal_processing/fft.hpp
@@ -43,9 +43,9 @@ class FFT_Visualizer {
 		// Visualizer parameters
 		///
 
-		// How many bars this visualizer will generate
+		// Horizontal resolution
 		const size_t width;
-		// Resolution of this visualizer's bars.
+		// Vertical resolution
 		const size_t height;
 		// Leftmost frequency in spectrum
 		const double HZ_MIN;