Fix braino

diff --git a/System/Posix/Signals.hs b/System/Posix/Signals.hs
index 962526d..2af259a 100644 (file)
--- a/System/Posix/Signals.hs
+++ b/System/Posix/Signals.hs
@@ -281,7 +281,7 @@ signalProcessGroup sig pgid
   = throwErrnoIfMinus1_ "signalProcessGroup" (c_killpg (fromIntegral pgid) sig)
 
 foreign import ccall unsafe "killpg"
-  c_killpg :: CInt -> CInt -> IO CInt
+  c_killpg :: CPid -> CInt -> IO CInt
 
 -- | @raiseSignal int@ calls @kill@ to signal the current process
 --   with interrupt signal @int@.