diff --git a/.zenodo.json b/.zenodo.json
index 1f4af84fc9..9f4777690f 100644
--- a/.zenodo.json
+++ b/.zenodo.json
@@ -605,6 +605,10 @@
       "affiliation": "MIT, HMS",
       "name": "Ghosh, Satrajit",
       "orcid": "0000-0002-5312-6729"
+    },
+    {
+      "affiliation": "Vrije Universiteit Amsterdam",
+      "name": "Ort, Eduard"
     }
   ],
   "keywords": [
diff --git a/nipype/algorithms/confounds.py b/nipype/algorithms/confounds.py
index 10985edc6f..8961433c14 100644
--- a/nipype/algorithms/confounds.py
+++ b/nipype/algorithms/confounds.py
@@ -532,7 +532,7 @@ def _run_interface(self, runtime):
                 # Derive TR from NIfTI header, if possible
                 try:
                     TR = imgseries.header.get_zooms()[3]
-                    if imgseries.get_xyzt_units()[1] == 'msec':
+                    if imgseries.header.get_xyzt_units()[1] == 'msec':
                         TR /= 1000
                 except (AttributeError, IndexError):
                     TR = 0