diff --git a/bin/wm_cluster_remove_outliers.py b/bin/wm_cluster_remove_outliers.py
index b7297afa..006d6f5d 100644
--- a/bin/wm_cluster_remove_outliers.py
+++ b/bin/wm_cluster_remove_outliers.py
@@ -11,14 +11,6 @@
 
 import whitematteranalysis as wma
 
-try:
-    from joblib import Parallel, delayed
-    USE_PARALLEL = 1
-except ImportError:
-    USE_PARALLEL = 0
-    print(f"<{os.path.basename(__file__)}> Failed to import joblib, cannot multiprocess.")
-    print(f"<{os.path.basename(__file__)}> Please install joblib for this functionality.")
-
 
 def _build_arg_parser():
 
diff --git a/whitematteranalysis/register_two_subjects.py b/whitematteranalysis/register_two_subjects.py
index 1fc2b761..7a6cd81b 100644
--- a/whitematteranalysis/register_two_subjects.py
+++ b/whitematteranalysis/register_two_subjects.py
@@ -25,14 +25,6 @@ class RegisterTractography
 import numpy
 import vtk
 
-try:
-    from joblib import Parallel, delayed
-    USE_PARALLEL = 1
-except ImportError:
-    USE_PARALLEL = 0
-    print(f"<{os.path.basename(__file__)}> Failed to import joblib, cannot multiprocess.")
-    print(f"<{os.path.basename(__file__)}> Please install joblib for this functionality.")
-
 import whitematteranalysis as wma
 
 
diff --git a/whitematteranalysis/register_two_subjects_nonrigid.py b/whitematteranalysis/register_two_subjects_nonrigid.py
index 3f3e3e00..a94f3700 100644
--- a/whitematteranalysis/register_two_subjects_nonrigid.py
+++ b/whitematteranalysis/register_two_subjects_nonrigid.py
@@ -25,14 +25,6 @@ class RegisterTractographyNonrigid
 import numpy
 import vtk
 
-try:
-    from joblib import Parallel, delayed
-    USE_PARALLEL = 1
-except ImportError:
-    USE_PARALLEL = 0
-    print(f"<{os.path.basename(__file__)}> Failed to import joblib, cannot multiprocess.")
-    print(f"<{os.path.basename(__file__)}> Please install joblib for this functionality.")
-
 import whitematteranalysis as wma
 
 
diff --git a/whitematteranalysis/register_two_subjects_nonrigid_bsplines.py b/whitematteranalysis/register_two_subjects_nonrigid_bsplines.py
index 88c8606e..d0d1b43a 100644
--- a/whitematteranalysis/register_two_subjects_nonrigid_bsplines.py
+++ b/whitematteranalysis/register_two_subjects_nonrigid_bsplines.py
@@ -27,19 +27,11 @@ class RegisterTractographyNonrigid
 import vtk
 import vtk.util.numpy_support
 
+import whitematteranalysis as wma
+
 # debug only
 #import resource
 
-try:
-    from joblib import Parallel, delayed
-    USE_PARALLEL = 1
-except ImportError:
-    USE_PARALLEL = 0
-    print(f"<{os.path.basename(__file__)}> Failed to import joblib, cannot multiprocess.")
-    print(f"<{os.path.basename(__file__)}> Please install joblib for this functionality.")
-
-import whitematteranalysis as wma
-
 
 class RegisterTractographyNonrigid(wma.register_two_subjects.RegisterTractography):
 
diff --git a/whitematteranalysis/relative_distance.py b/whitematteranalysis/relative_distance.py
index 28d87870..da293843 100644
--- a/whitematteranalysis/relative_distance.py
+++ b/whitematteranalysis/relative_distance.py
@@ -16,15 +16,6 @@ class RelativeDistanceModel
 import numpy
 import vtk
 
-try:
-    from joblib import Parallel, delayed
-    USE_PARALLEL = 1
-except ImportError:
-    USE_PARALLEL = 0
-    print(f"<{os.path.basename(__file__)}> Failed to import joblib, cannot multiprocess.")
-    print(f"<{os.path.basename(__file__)}> Please install joblib for this functionality.")
-
-
 import whitematteranalysis.fibers
 import whitematteranalysis.similarity