diff --git a/caput/mpiarray.py b/caput/mpiarray.py
index d5bbee80..cc8ab5f0 100644
--- a/caput/mpiarray.py
+++ b/caput/mpiarray.py
@@ -19,7 +19,7 @@
 
     # Load in data into parallel array
     for lfi, fi in darr1.enumerate(axis=0):
-        darr1[lfi] = load_freq_data(gfi)
+        darr1.local_array[lfi] = load_freq_data(gfi)
 
     # Perform m-transform (i.e. FFT)
     darr2 = MPIArray.wrap(np.fft.fft(darr1, axis=1), axis=0)