diff --git a/docs/wfc3tools/wf3rej.rst b/docs/wfc3tools/wf3rej.rst
index a825a16..d804c93 100644
--- a/docs/wfc3tools/wf3rej.rst
+++ b/docs/wfc3tools/wf3rej.rst
@@ -64,7 +64,7 @@ Parameters
 
     input : str or list
         Name of input files, such as
-            * common separated (no spaces) filenames (``iaao01k8q_flc.fits,iaao01k9q_flc.fits``)
+            * comma-separated (no spaces) filenames (``iaao01k8q_flc.fits,iaao01k9q_flc.fits``)
             * a Python list of filenames
             * a partial filename with wildcards (``*flt.fits``)
             * an at-file (``@input``)
diff --git a/wfc3tools/wf3rej.py b/wfc3tools/wf3rej.py
index 9d7380b..54393de 100644
--- a/wfc3tools/wf3rej.py
+++ b/wfc3tools/wf3rej.py
@@ -62,7 +62,7 @@ def wf3rej(input, output, crrejtab="", scalense=0., initgues="",
     ----------
     input : str or list
         Name of input files, such as
-        - common separated (no spaces) filenames (``iaao01k8q_flc.fits,iaao01k9q_flc.fits``)
+        - comma-separated (no spaces) filenames (``iaao01k8q_flc.fits,iaao01k9q_flc.fits``)
         - a Python list of filenames
         - a partial filename with wildcards (``*flt.fits``)
         - an at-file (``@input``)