diff --git a/pyparticles/ogl/axis_ogl.py b/pyparticles/ogl/axis_ogl.py
index f2c074b..73f2fc7 100644
--- a/pyparticles/ogl/axis_ogl.py
+++ b/pyparticles/ogl/axis_ogl.py
@@ -122,8 +122,8 @@ def draw_plane( self , plane="xy", color=( 0.7 , 0.7 , 0.7 , 0.3 ) , leng=None )
         glBegin(GL_LINES)
         
         for pts in t :
-            glVertex3fv( pts[0] )
-            glVertex3fv( pts[1] )
+            glVertex3fv( pts[0].view(type=np.ndarray) )
+            glVertex3fv( pts[1].view(type=np.ndarray) )
             
         glEnd()
         
@@ -199,12 +199,12 @@ def draw_arrow( self , color , axis , leng=None ):
         glBegin(GL_LINES)
         
         for pts in t :
-            glVertex3fv( pts[0] )
-            glVertex3fv( pts[1] )
+            glVertex3fv( pts[0].view(type=np.ndarray) )
+            glVertex3fv( pts[1].view(type=np.ndarray) )
         
             
         glEnd()
         
         
         
-        
\ No newline at end of file
+        
diff --git a/pyparticles/ogl/draw_vector_field.py b/pyparticles/ogl/draw_vector_field.py
index 6cb0908..9097aa3 100644
--- a/pyparticles/ogl/draw_vector_field.py
+++ b/pyparticles/ogl/draw_vector_field.py
@@ -195,14 +195,14 @@ def _draw_field( self , key ):
             
             glColor4f( color[0] , color[1] , color[2] , color[3] )
             
-            glVertex3fv( pts[0] )
-            glVertex3fv( pts[1] )
+            glVertex3fv( pts[0].view(type=np.ndarray) )
+            glVertex3fv( pts[1].view(type=np.ndarray) )
             
-            glVertex3fv( pts[2] )
-            glVertex3fv( pts[3] )
+            glVertex3fv( pts[2].view(type=np.ndarray) )
+            glVertex3fv( pts[3].view(type=np.ndarray) )
             
-            glVertex3fv( pts[4] )
-            glVertex3fv( pts[5] )
+            glVertex3fv( pts[4].view(type=np.ndarray) )
+            glVertex3fv( pts[5].view(type=np.ndarray) )
             
         glEnd()