diff --git a/Utilities/Kspace_sampling.m b/Utilities/Kspace_sampling.m
index 3e48a98..794f691 100644
--- a/Utilities/Kspace_sampling.m
+++ b/Utilities/Kspace_sampling.m
@@ -167,7 +167,7 @@
         Fetal_Brain_rotated_upsampled = sampling_OoP(            Fetal_Brain_rotated, ...
                                                                      sampling_factor, ...
                                                      interpolation_method_upsampling);
-        [ref_T2map_rotated, ref_T1map_rotated] = tissue_to_MR(Fetal_Brain_rotated_upsampled, ...
+        [ref_T1map_rotated, ref_T2map_rotated] = tissue_to_MR(Fetal_Brain_rotated_upsampled, ...
                                                                         Fetal_Brain_Tissues, ...
                                                                                          B0);
         T2decay_moved = compute_t2decay(Fetal_Brain_rotated_upsampled, ...