Fixed compile warning
diff --git a/src/joystick/hidapi/SDL_hidapi_ps4.c b/src/joystick/hidapi/SDL_hidapi_ps4.c
index e4056fd..1bb753d 100644
--- a/src/joystick/hidapi/SDL_hidapi_ps4.c
+++ b/src/joystick/hidapi/SDL_hidapi_ps4.c
@@ -366,7 +366,7 @@ HIDAPI_DriverPS4_ApplyCalibrationData(SDL_DriverPS4_Context *ctx, int index, Sin
/* Convert the raw data to the units expected by SDL */
if (index < 3) {
- result = (result / GYRO_RES_PER_DEGREE) * M_PI / 180.0f;
+ result = (result / GYRO_RES_PER_DEGREE) * (float)M_PI / 180.0f;
} else {
result = (result / ACCEL_RES_PER_G) * SDL_STANDARD_GRAVITY;
}