diff --git a/lib/Data/Time/Clock/Internal/POSIXTime.hs b/lib/Data/Time/Clock/Internal/POSIXTime.hs
index 504c578a632fcef16966d36e8db247308d225d54..dfaaaaa31f4f92b6041e4978f50b14c575bc75b4 100644
--- a/lib/Data/Time/Clock/Internal/POSIXTime.hs
+++ b/lib/Data/Time/Clock/Internal/POSIXTime.hs
@@ -9,6 +9,6 @@ posixDayLength = nominalDay
 
 -- | POSIX time is the nominal time since 1970-01-01 00:00 UTC
 --
--- To convert from a 'Foreign.C.CTime' or 'System.Posix.EpochTime', use 'realToFrac'.
+-- To convert from a 'Foreign.C.Types.CTime' or @System.Posix.EpochTime@, use 'realToFrac'.
 --
 type POSIXTime = NominalDiffTime