diff --git a/src/libcamera/pipeline/ipu3/cio2.cpp b/src/libcamera/pipeline/ipu3/cio2.cpp
index 81a7a8ab01b8..74a5d93f88ae 100644
--- a/src/libcamera/pipeline/ipu3/cio2.cpp
+++ b/src/libcamera/pipeline/ipu3/cio2.cpp
@@ -7,8 +7,8 @@
 
 #include "cio2.h"
 
+#include <cmath>
 #include <limits>
-#include <math.h>
 
 #include <linux/media-bus-format.h>
 
@@ -304,7 +304,7 @@ V4L2SubdeviceFormat CIO2Device::getSensorFormat(const std::vector<unsigned int>
 			 * comparing it with a single precision digit is enough.
 			 */
 			ratio = static_cast<unsigned int>(ratio * 10) / 10.0;
-			float ratioDiff = fabsf(ratio - desiredRatio);
+			float ratioDiff = std::abs(ratio - desiredRatio);
 			unsigned int area = sz.width * sz.height;
 			unsigned int areaDiff = area - desiredArea;
 
diff --git a/src/libcamera/sensor/camera_sensor.cpp b/src/libcamera/sensor/camera_sensor.cpp
index 4a990bb994b9..1b224f1989fe 100644
--- a/src/libcamera/sensor/camera_sensor.cpp
+++ b/src/libcamera/sensor/camera_sensor.cpp
@@ -8,9 +8,9 @@
 #include "libcamera/internal/camera_sensor.h"
 
 #include <algorithm>
+#include <cmath>
 #include <float.h>
 #include <limits.h>
-#include <math.h>
 #include <string.h>
 
 #include <libcamera/base/utils.h>
@@ -719,7 +719,7 @@ V4L2SubdeviceFormat CameraSensor::getFormat(const std::vector<unsigned int> &mbu
 				continue;
 
 			float ratio = static_cast<float>(sz.width) / sz.height;
-			float ratioDiff = fabsf(ratio - desiredRatio);
+			float ratioDiff = std::abs(ratio - desiredRatio);
 			unsigned int area = sz.width * sz.height;
 			unsigned int areaDiff = area - desiredArea;