diff --git a/dev-haskell/wai-app-static/wai-app-static-3.1.7.2-r1.ebuild b/dev-haskell/wai-app-static/wai-app-static-3.1.7.2-r1.ebuild
index 76523567be57a..d0cd4c75f305b 100644
--- a/dev-haskell/wai-app-static/wai-app-static-3.1.7.2-r1.ebuild
+++ b/dev-haskell/wai-app-static/wai-app-static-3.1.7.2-r1.ebuild
@@ -44,12 +44,9 @@ DEPEND="${RDEPEND}
 		dev-haskell/temporary )
 "
 
-src_prepare() {
-	default
-
-	cabal_chdeps \
-		'wai-extra                 >= 3.0      && < 3.1' 'wai-extra                 >= 3.0'
-}
+CABAL_CHDEPS=(
+	'wai-extra                 >= 3.0      && < 3.1' 'wai-extra                 >= 3.0'
+)
 
 src_configure() {
 	haskell-cabal_src_configure \