diff --git a/XMonad/Util/Grab.hs b/XMonad/Util/Grab.hs
index 09f32e0fa6..b1ec2074c8 100644
--- a/XMonad/Util/Grab.hs
+++ b/XMonad/Util/Grab.hs
@@ -29,7 +29,7 @@ module XMonad.Util.Grab
   ) where
 
 -- core
-import           XMonad
+import           XMonad                         hiding (mkGrabs)
 
 import           Control.Monad                  ( when )
 import           Data.Bits                      ( setBit )
diff --git a/xmonad-contrib.cabal b/xmonad-contrib.cabal
index 957d8f462d..fa0e3ac7da 100644
--- a/xmonad-contrib.cabal
+++ b/xmonad-contrib.cabal
@@ -76,7 +76,7 @@ library
     ghc-options:   -Wall -Wno-unused-do-bind
 
     if flag(pedantic)
-       ghc-options: -Werror -Wwarn=deprecations
+       ghc-options: -Werror -Wwarn=deprecations -Wwarn=dodgy-imports
 
     -- Keep this in sync with the oldest version in 'tested-with'
     if impl(ghc > 8.4.4)
@@ -478,7 +478,7 @@ test-suite tests
   default-language: Haskell2010
 
   if flag(pedantic)
-     ghc-options: -Werror -Wwarn=deprecations
+     ghc-options: -Werror -Wwarn=deprecations -Wwarn=dodgy-imports
 
   -- Keep this in sync with the oldest version in 'tested-with'
   if impl(ghc > 8.4.4)