diff --git a/application.c b/application.c
index f49d0ba..67172ea 100644
--- a/application.c
+++ b/application.c
@@ -92,7 +92,7 @@ size_t putc(char c)
  *  @param[in] precision number of digits after comma to print
  *  @note %f is used to force scientific notation
  */
-static void print_voltage(double voltage, uint8_t precision)
+static void print_fpu(double voltage, uint8_t precision)
 {
 	uint32_t multiplier = 1;
 	for (uint8_t i = 0; i < precision; i++) {
@@ -139,7 +139,7 @@ static void print_voltage_target(void)
 	gpio_set(GPIO_PORT(TARGET_EN), GPIO_PIN(TARGET_EN)); // ensure the level shifters pulling up the signals are not enabled
 	float* voltages = measure_voltages(); // measure voltages
 	puts("target voltage: ");
-	print_voltage(voltages[1], 2);
+	print_fpu(voltages[1], 2);
 	puts(" V");
 	if (voltages[1] > 3.25) {
 		puts(" (warning: signal voltage may exceed 3.30 V limit)");
@@ -226,7 +226,7 @@ static void command_voltages(void* argument)
 		mux_select(i); // select the channel
 		voltages = measure_voltages(); // measure raw voltages
 		puts(" ");
-		print_voltage(voltages[2], 2);
+		print_fpu(voltages[2], 2);
 		puts(" V\n");
 	}
 }