diff --git a/code/crystallite.f90 b/code/crystallite.f90
index 85fba5532..1356c2459 100644
--- a/code/crystallite.f90
+++ b/code/crystallite.f90
@@ -2936,9 +2936,9 @@ logical error
         else
           orientation = math_RtoQuaternion(transpose(R))
         endif
-        crystallite_rotation(1:4,g,i,e) = math_QuaternionDisorientation(math_qConj(orientation), &
-                                                                        math_qConj(crystallite_orientation0(1:4,g,i,e)), &
-                                                                        0_pInt )                          ! we don't want symmetry here  
+        crystallite_rotation(1:4,g,i,e) = math_QuaternionDisorientation(crystallite_orientation0(1:4,g,i,e), &  ! active rotation from ori0
+                                                                        orientation, &                          ! to current orientation
+                                                                        0_pInt )                                ! we don't want symmetry here  
         crystallite_orientation(1:4,g,i,e) = orientation
       enddo
     enddo