diff --git a/man/crypttab.xml b/man/crypttab.xml
index 2379fc082..f976bdaa2 100644
--- a/man/crypttab.xml
+++ b/man/crypttab.xml
@@ -182,7 +182,7 @@
                         </varlistentry>
 
                         <varlistentry>
-                                <term><varname>read-only</varname></term>
+                                <term><varname>read-only</varname></term><term><varname>readonly</varname></term>
 
                                 <listitem><para>Set up the encrypted
                                 block device in read-only
diff --git a/src/cryptsetup/cryptsetup.c b/src/cryptsetup/cryptsetup.c
index f33284370..a8cdf1017 100644
--- a/src/cryptsetup/cryptsetup.c
+++ b/src/cryptsetup/cryptsetup.c
@@ -111,7 +111,7 @@ static int parse_one_option(const char *option) {
                         return 0;
                 }
 
-        } else if (streq(option, "readonly"))
+        } else if (streq(option, "readonly") || streq(option, "read-only"))
                 opt_readonly = true;
         else if (streq(option, "verify"))
                 opt_verify = true;