diff --git a/bin/pycbc_multi_inspiral b/bin/pycbc_multi_inspiral
index c14fc4c3cfb..8abc9d961c3 100755
--- a/bin/pycbc_multi_inspiral
+++ b/bin/pycbc_multi_inspiral
@@ -216,13 +216,13 @@ parser.add_argument(
     "--ra",
     type=angle_as_radians,
     help="Right ascension of a single sky point to search. Use the rad or deg "
-    "prefix to specify units, otherwise radians are assumed."
+    "suffix to specify units, otherwise radians are assumed."
 )
 parser.add_argument(
     "--dec",
     type=angle_as_radians,
     help="Declination of a single sky point to search. Use the rad or deg "
-    "prefix to specify units, otherwise radians are assumed."
+    "suffix to specify units, otherwise radians are assumed."
 )
 parser.add_argument(
     "--sky-grid",
diff --git a/bin/pygrb/pycbc_pygrb_grb_info_table b/bin/pygrb/pycbc_pygrb_grb_info_table
index b0ee1ce7b13..a4a605d631d 100644
--- a/bin/pygrb/pycbc_pygrb_grb_info_table
+++ b/bin/pygrb/pycbc_pygrb_grb_info_table
@@ -53,15 +53,15 @@ parser.add_argument("--trigger-time", type=int,
 parser.add_argument("--ra", type=angle_as_radians,
                     required=True,
                     help="Right ascension of the GRB. Use the rad or deg "
-                    "prefix to specify units, otherwise radians are assumed.")
+                    "suffix to specify units, otherwise radians are assumed.")
 parser.add_argument("--dec", type=angle_as_radians,
                     required=True,
-                    help="Declination of the GRB. Use the rad or deg prefix "
+                    help="Declination of the GRB. Use the rad or deg suffix "
                     "to specify units, otherwise radians are assumed.")
 parser.add_argument("--sky-error", type=angle_as_radians,
                     default=0,
                     help="Sky-localisation error of the GRB. Use the rad or "
-                    "deg prefix to specify units, otherwise radians are assumed.")
+                    "deg suffix to specify units, otherwise radians are assumed.")
 parser.add_argument("--ifos", action="store", nargs='+',
                     default=None, required=True,
                     help="List containing the active IFOs.")