diff --git a/sources/qet.cpp b/sources/qet.cpp
index 45b1d7af3..8fbb4297e 100644
--- a/sources/qet.cpp
+++ b/sources/qet.cpp
@@ -442,7 +442,7 @@ QString QET::pointerString(void *ptr) {
 qreal QET::correctAngle(const qreal &angle) {
 	// ramene l'angle demande entre -360.0 et +360.0 degres
 	qreal corrected_angle = angle;
-	while (corrected_angle < 360.0) corrected_angle += 360.0;
-	while (corrected_angle > 360.0) corrected_angle -= 360.0;
+	while (corrected_angle <= -360.0) corrected_angle += 360.0;
+	while (corrected_angle >=  360.0) corrected_angle -= 360.0;
 	return(corrected_angle);
 }