diff --git a/webbpsf/wfirst.py b/webbpsf/wfirst.py
index dc400871..b9c84ecd 100644
--- a/webbpsf/wfirst.py
+++ b/webbpsf/wfirst.py
@@ -477,6 +477,7 @@ def __init__(self):
 
         self.pupil_mask_list = self._pupil_controller.pupil_mask_list
 
+        self._is_custom_aberrations = False
         self._detector_npixels = 4096
         self._detectors = _load_wfi_detector_aberrations(os.path.join(self._datapath, 'wim_zernikes_cycle8.csv'))
         assert len(self._detectors.keys()) > 0
@@ -556,6 +557,16 @@ def _unmasked_pupil_path(self):
     def _masked_pupil_path(self):
         return self._pupil_controller._masked_pupil_path
 
+    def override_aberrations(self, path):
+        """Override detector aberrations"""
+        self._detectors = _load_wfi_detector_aberrations(path)
+        self._is_custom_aberrations = True
+
+    def reset_override_aberrations(self):
+        """Release detector aberrations override and loads default"""
+        self._detectors = _load_wfi_detector_aberrations(os.path.join(self._datapath, 'wim_zernikes_cycle8.csv'))
+        self._is_custom_aberrations = False
+
 
 class CGI(WFIRSTInstrument):
     """