diff --git a/Firmware/ultralcd.cpp b/Firmware/ultralcd.cpp
index 6f08b9e9f..edd64fcf8 100644
--- a/Firmware/ultralcd.cpp
+++ b/Firmware/ultralcd.cpp
@@ -3648,11 +3648,11 @@ static void lcd_show_end_stops() {
 	lcd_set_cursor(0, 0);
 	lcd_puts_P((PSTR("End stops diag")));
 	lcd_set_cursor(0, 1);
-	lcd_puts_P((READ(X_MIN_PIN) ^ X_MIN_ENDSTOP_INVERTING == 1) ? (PSTR("X1")) : (PSTR("X0")));
+	lcd_puts_P((READ(X_MIN_PIN) ^ (bool)X_MIN_ENDSTOP_INVERTING) ? (PSTR("X1")) : (PSTR("X0")));
 	lcd_set_cursor(0, 2);
-	lcd_puts_P((READ(Y_MIN_PIN) ^ Y_MIN_ENDSTOP_INVERTING == 1) ? (PSTR("Y1")) : (PSTR("Y0")));
+	lcd_puts_P((READ(Y_MIN_PIN) ^ (bool)Y_MIN_ENDSTOP_INVERTING) ? (PSTR("Y1")) : (PSTR("Y0")));
 	lcd_set_cursor(0, 3);
-	lcd_puts_P((READ(Z_MIN_PIN) ^ Z_MIN_ENDSTOP_INVERTING == 1) ? (PSTR("Z1")) : (PSTR("Z0")));
+	lcd_puts_P((READ(Z_MIN_PIN) ^ (bool)Z_MIN_ENDSTOP_INVERTING) ? (PSTR("Z1")) : (PSTR("Z0")));
 }
 
 static void menu_show_end_stops() {
@@ -6748,11 +6748,11 @@ static bool lcd_selfcheck_axis(int _axis, int _travel)
 		plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[3], manual_feedrate[0] / 60, active_extruder);
 		st_synchronize();
 #ifdef TMC2130
-		if (((READ(Z_MIN_PIN) ^ Z_MIN_ENDSTOP_INVERTING) == 1))
+		if ((READ(Z_MIN_PIN) ^ (bool)Z_MIN_ENDSTOP_INVERTING))
 #else //TMC2130
-		if (((READ(X_MIN_PIN) ^ X_MIN_ENDSTOP_INVERTING) == 1) ||
-			((READ(Y_MIN_PIN) ^ Y_MIN_ENDSTOP_INVERTING) == 1) ||
-			((READ(Z_MIN_PIN) ^ Z_MIN_ENDSTOP_INVERTING) == 1))
+		if ((READ(X_MIN_PIN) ^ (bool)X_MIN_ENDSTOP_INVERTING) ||
+			(READ(Y_MIN_PIN) ^ (bool)Y_MIN_ENDSTOP_INVERTING) ||
+			(READ(Z_MIN_PIN) ^ (bool)Z_MIN_ENDSTOP_INVERTING))
 #endif //TMC2130
 		{
 			if (_axis == 0)
diff --git a/Firmware/xyzcal.cpp b/Firmware/xyzcal.cpp
index ed3d3210d..027cfdfbc 100644
--- a/Firmware/xyzcal.cpp
+++ b/Firmware/xyzcal.cpp
@@ -210,16 +210,16 @@ bool xyzcal_spiral8(int16_t cx, int16_t cy, int16_t z0, int16_t dz, int16_t radi
 	if (pad) ad = *pad;
 	DBG(_n("xyzcal_spiral8 cx=%d cy=%d z0=%d dz=%d radius=%d ad=%d\n"), cx, cy, z0, dz, radius, ad);
 	if (!ret && (ad < 720))
-		if (ret = xyzcal_spiral2(cx, cy, z0 - 0*dz, dz, radius, 0, delay_us, check_pinda, &ad))
+		if ((ret = xyzcal_spiral2(cx, cy, z0 - 0*dz, dz, radius, 0, delay_us, check_pinda, &ad)) != 0)
 			ad += 0;
 	if (!ret && (ad < 1440))
-		if (ret = xyzcal_spiral2(cx, cy, z0 - 1*dz, dz, -radius, 0, delay_us, check_pinda, &ad))
+		if ((ret = xyzcal_spiral2(cx, cy, z0 - 1*dz, dz, -radius, 0, delay_us, check_pinda, &ad)) != 0)
 			ad += 720;
 	if (!ret && (ad < 2160))
-		if (ret = xyzcal_spiral2(cx, cy, z0 - 2*dz, dz, radius, 180, delay_us, check_pinda, &ad))
+		if ((ret = xyzcal_spiral2(cx, cy, z0 - 2*dz, dz, radius, 180, delay_us, check_pinda, &ad)) != 0)
 			ad += 1440;
 	if (!ret && (ad < 2880))
-		if (ret = xyzcal_spiral2(cx, cy, z0 - 3*dz, dz, -radius, 180, delay_us, check_pinda, &ad))
+		if ((ret = xyzcal_spiral2(cx, cy, z0 - 3*dz, dz, -radius, 180, delay_us, check_pinda, &ad)) != 0)
 			ad += 2160;
 	if (pad) *pad = ad;
 	return ret;