diff --git a/inputsource.cpp b/inputsource.cpp
index 7a26e64..d92b332 100644
--- a/inputsource.cpp
+++ b/inputsource.cpp
@@ -6,6 +6,8 @@
 #include <sys/mman.h>
 #include <sys/stat.h>
 
+#include <stdexcept>
+
 InputSource::InputSource(const char *filename) {
     m_file = fopen(filename, "rb");
     if (m_file == nullptr)
diff --git a/spectrogram.cpp b/spectrogram.cpp
index 36cec75..5356110 100644
--- a/spectrogram.cpp
+++ b/spectrogram.cpp
@@ -7,6 +7,9 @@
 #include <QPaintEvent>
 #include <QRect>
 
+#include <cstdlib>
+
+
 Spectrogram::Spectrogram()
 {
 	sampleRate = 8000000;
@@ -118,7 +121,7 @@ void Spectrogram::paintEvent(QPaintEvent *event)
 		for (int y = 0; y < height; y++) {
 			getLine(line, rect.y() + y);
 			for (int x = 0; x < fftSize; x++) {
-				float powerRange = std::abs(powerMin - powerMax);
+				float powerRange = std::abs(int(powerMin - powerMax)); // Cast to remove overload ambiguity
 				float normPower = (line[x] - powerMax) * -1.0f / powerRange;
 				normPower = clamp(normPower, 0.0f, 1.0f);
 
diff --git a/spectrogram.h b/spectrogram.h
index ee30405..256fe94 100644
--- a/spectrogram.h
+++ b/spectrogram.h
@@ -4,6 +4,8 @@
 #include "fft.h"
 #include "inputsource.h"
 
+#include <math.h>
+
 static const double Tau = M_PI * 2.0;
 
 class Spectrogram : public QWidget {
diff --git a/spectrogramcontrols.cpp b/spectrogramcontrols.cpp
index e6cc513..c57d4bc 100644
--- a/spectrogramcontrols.cpp
+++ b/spectrogramcontrols.cpp
@@ -1,6 +1,7 @@
 #include "spectrogramcontrols.h"
 #include <QIntValidator>
 #include <QLabel>
+#include <cmath>
 
 SpectrogramControls::SpectrogramControls(const QString & title, QWidget * parent)
 	: QDockWidget::QDockWidget(title, parent)