diff --git a/nipype/algorithms/tests/test_compcor.py b/nipype/algorithms/tests/test_CompCor.py
similarity index 100%
rename from nipype/algorithms/tests/test_compcor.py
rename to nipype/algorithms/tests/test_CompCor.py
diff --git a/nipype/algorithms/tests/test_errormap.py b/nipype/algorithms/tests/test_ErrorMap.py
similarity index 100%
rename from nipype/algorithms/tests/test_errormap.py
rename to nipype/algorithms/tests/test_ErrorMap.py
diff --git a/nipype/algorithms/tests/test_overlap.py b/nipype/algorithms/tests/test_Overlap.py
similarity index 100%
rename from nipype/algorithms/tests/test_overlap.py
rename to nipype/algorithms/tests/test_Overlap.py
diff --git a/nipype/algorithms/tests/test_tsnr.py b/nipype/algorithms/tests/test_TSNR.py
similarity index 100%
rename from nipype/algorithms/tests/test_tsnr.py
rename to nipype/algorithms/tests/test_TSNR.py
diff --git a/nipype/interfaces/ants/tests/test_registration.py b/nipype/interfaces/ants/tests/test_extra_Registration.py
similarity index 100%
rename from nipype/interfaces/ants/tests/test_registration.py
rename to nipype/interfaces/ants/tests/test_extra_Registration.py
diff --git a/nipype/interfaces/niftyseg/tests/test_patchmatch.py b/nipype/interfaces/niftyseg/tests/test_extra_PatchMatch.py
similarity index 100%
rename from nipype/interfaces/niftyseg/tests/test_patchmatch.py
rename to nipype/interfaces/niftyseg/tests/test_extra_PatchMatch.py