diff --git a/lib/libmd/mdX.3 b/lib/libmd/mdX.3
index 412aebab1c1d..0a290c7360f9 100644
--- a/lib/libmd/mdX.3
+++ b/lib/libmd/mdX.3
@@ -96,17 +96,17 @@ is similar to
 .Fn MDXFile ,
 but it only calculates the digest over a byte-range of the file specified,
 starting at
-.Ar offset
+.Fa offset
 and spanning
-.Ar length
+.Fa length
 bytes.
 If the
-.Ar length
+.Fa length
 parameter is specified as 0, or more than the length of the remaining part
 of the file,
 .Fn MDXFileChunk
 calculates the digest from
-.Ar offset
+.Fa offset
 to the end of file.
 .Fn MDXData
 calculates the digest of a chunk of data in memory, and uses
@@ -119,7 +119,7 @@ When using
 or
 .Fn MDXData ,
 the 
-.Ar buf
+.Fa buf
 argument can be a null pointer, in which case the returned string
 is allocated with
 .Xr malloc 3
@@ -127,7 +127,7 @@ and subsequently must be explicitly deallocated using
 .Xr free 3
 after use.
 If the 
-.Ar buf
+.Fa buf
 argument is non-null it must point to at least 33 characters of buffer space.
 .Sh SEE ALSO
 .Xr md2 3 ,
diff --git a/lib/libmd/ripemd.3 b/lib/libmd/ripemd.3
index ed71be5a8a52..b43bde7c58e5 100644
--- a/lib/libmd/ripemd.3
+++ b/lib/libmd/ripemd.3
@@ -80,17 +80,17 @@ is similar to
 .Fn RIPEMD160_File ,
 but it only calculates the digest over a byte-range of the file specified,
 starting at
-.Ar offset
+.Fa offset
 and spanning
-.Ar length
+.Fa length
 bytes.
 If the
-.Ar length
+.Fa length
 parameter is specified as 0, or more than the length of the remaining part
 of the file,
 .Fn RIPEMD160_FileChunk
 calculates the digest from
-.Ar offset
+.Fa offset
 to the end of file.
 .Fn RIPEMD160_Data
 calculates the digest of a chunk of data in memory, and uses
@@ -103,7 +103,7 @@ When using
 or
 .Fn RIPEMD160_Data ,
 the 
-.Ar buf
+.Fa buf
 argument can be a null pointer, in which case the returned string
 is allocated with
 .Xr malloc 3
@@ -111,7 +111,7 @@ and subsequently must be explicitly deallocated using
 .Xr free 3
 after use.
 If the 
-.Ar buf
+.Fa buf
 argument is non-null it must point to at least 41 characters of buffer space.
 .Sh SEE ALSO
 .Xr md2 3 ,
diff --git a/lib/libmd/sha.3 b/lib/libmd/sha.3
index 90b727703be6..6e546e6b8e18 100644
--- a/lib/libmd/sha.3
+++ b/lib/libmd/sha.3
@@ -112,17 +112,17 @@ is similar to
 .Fn SHA1_File ,
 but it only calculates the digest over a byte-range of the file specified,
 starting at
-.Ar offset
+.Fa offset
 and spanning
-.Ar length
+.Fa length
 bytes.
 If the
-.Ar length
+.Fa length
 parameter is specified as 0, or more than the length of the remaining part
 of the file,
 .Fn SHA1_FileChunk
 calculates the digest from
-.Ar offset
+.Fa offset
 to the end of file.
 .Fn SHA1_Data
 calculates the digest of a chunk of data in memory, and uses
@@ -135,7 +135,7 @@ When using
 or
 .Fn SHA1_Data ,
 the 
-.Ar buf
+.Fa buf
 argument can be a null pointer, in which case the returned string
 is allocated with
 .Xr malloc 3
@@ -143,7 +143,7 @@ and subsequently must be explicitly deallocated using
 .Xr free 3
 after use.
 If the 
-.Ar buf
+.Fa buf
 argument is non-null it must point to at least 41 characters of buffer space.
 .Sh SEE ALSO
 .Xr md2 3 ,