diff --git a/MLI_vectorielle.py b/MLI_vectorielle.py
index d602283..26d29cb 100644
--- a/MLI_vectorielle.py
+++ b/MLI_vectorielle.py
@@ -104,7 +104,7 @@ class MLI_plot:
         self.vectorgraph_arrow = [self.ax[1].arrow(0, 0, 0, self.v_max,
                                                    lw=2, head_width=0.05, head_length=self.v_max/15,
                                                    color="C"+str(i), length_includes_head=True,
-                                                   transform=(mpl.transforms.Affine2D().translate((self.phi+i*120)*PI/180, 0)
+                                                   transform=(mpl.transforms.Affine2D().translate((self.phi-i*120)*PI/180, 0)
                                                               +self.ax[1].transData)
                                                    )
                                   for i in range(3)]
@@ -134,7 +134,7 @@ class MLI_plot:
         
         for i, arrow in enumerate(self.vectorgraph_arrow):
             arrow.set_data(dy=self.v_max)
-            arrow.set_transform(mpl.transforms.Affine2D().translate((self.phi+i*120)*PI/180, 0)
+            arrow.set_transform(mpl.transforms.Affine2D().translate((self.phi-i*120)*PI/180, 0)
                                 +self.ax[1].transData)
         return