diff --git a/nipype/interfaces/afni/preprocess.py b/nipype/interfaces/afni/preprocess.py
index e46c9689c2..2135545b95 100644
--- a/nipype/interfaces/afni/preprocess.py
+++ b/nipype/interfaces/afni/preprocess.py
@@ -3490,7 +3490,7 @@ class Qwarp(AFNICommand):
     >>> qwarp3.inputs.base_file = 'mni.nii'
     >>> qwarp3.inputs.allineate = True
     >>> qwarp3.inputs.allineate_opts = '-cose lpa -verb'
-    >>> qwarp3.cmdline  # doctest: +ALLOW_UNICODE
+    >>> qwarp3.cmdline
     "3dQwarp -allineate -allineate_opts '-cose lpa -verb' -base mni.nii -source structural.nii -prefix structural_QW"
     >>> res3 = qwarp3.run()  # doctest: +SKIP    """
     _cmd = '3dQwarp'
diff --git a/nipype/interfaces/afni/utils.py b/nipype/interfaces/afni/utils.py
index e492b39d47..242b5077ee 100644
--- a/nipype/interfaces/afni/utils.py
+++ b/nipype/interfaces/afni/utils.py
@@ -1674,7 +1674,7 @@ class NwarpCat(AFNICommand):
     >>> nwarpcat = afni.NwarpCat()
     >>> nwarpcat.inputs.in_files = ['Q25_warp+tlrc.HEAD', ('IDENT', 'structural.nii')]
     >>> nwarpcat.inputs.out_file = 'Fred_total_WARP'
-    >>> nwarpcat.cmdline  # doctest: +ALLOW_UNICODE
+    >>> nwarpcat.cmdline
     "3dNwarpCat -prefix Fred_total_WARP Q25_warp+tlrc.HEAD 'IDENT(structural.nii)'"
     >>> res = nwarpcat.run()  # doctest: +SKIP
 
diff --git a/nipype/interfaces/ants/resampling.py b/nipype/interfaces/ants/resampling.py
index e268cb43e2..3ed60a51b1 100644
--- a/nipype/interfaces/ants/resampling.py
+++ b/nipype/interfaces/ants/resampling.py
@@ -75,7 +75,7 @@ class WarpTimeSeriesImageMultiTransform(ANTSCommand):
     >>> wtsimt.inputs.reference_image = 'ants_deformed.nii.gz'
     >>> wtsimt.inputs.transformation_series = ['ants_Warp.nii.gz','ants_Affine.txt']
     >>> wtsimt.inputs.invert_affine = [1] # # this will invert the 1st Affine file: ants_Affine.txt
-    >>> wtsimt.cmdline # doctest: +ALLOW_UNICODE
+    >>> wtsimt.cmdline
     'WarpTimeSeriesImageMultiTransform 4 resting.nii resting_wtsimt.nii -R ants_deformed.nii.gz ants_Warp.nii.gz \
 -i ants_Affine.txt'
     """