diff --git a/dev-cpp/folly/folly-2020.11.30.00.ebuild b/dev-cpp/folly/folly-2020.11.30.00.ebuild
index 6fec6011b2..7f638edb8d 100644
--- a/dev-cpp/folly/folly-2020.11.30.00.ebuild
+++ b/dev-cpp/folly/folly-2020.11.30.00.ebuild
@@ -32,7 +32,7 @@ RDEPEND="${DEPEND}"
 
 src_prepare(){
 	einfo $(get_libdir)
-	sed "s/lib CACHE/$(get_libdir) CACHE/" -i CMakeLists.txt
-	sed "s/lib\/cmake\/folly CACHE/$(get_libdir)\/cmake\/folly CACHE/" -i CMakeLists.txt
+	sed "s/lib CACHE/$(get_libdir) CACHE/" -i CMakeLists.txt || die
+	sed "s/lib\/cmake\/folly CACHE/$(get_libdir)\/cmake\/folly CACHE/" -i CMakeLists.txt || die
 	cmake_src_prepare
 }
diff --git a/dev-cpp/folly/folly-2021.01.04.00.ebuild b/dev-cpp/folly/folly-2021.01.04.00.ebuild
index cbb6a45e39..ceaf4f8b6f 100644
--- a/dev-cpp/folly/folly-2021.01.04.00.ebuild
+++ b/dev-cpp/folly/folly-2021.01.04.00.ebuild
@@ -32,5 +32,5 @@ src_prepare() {
 	cmake_src_prepare
 	sed -e "s/lib CACHE/$(get_libdir) CACHE/" \
 		-e "s/lib\/cmake\/folly CACHE/$(get_libdir)\/cmake\/folly CACHE/" \
-		-i CMakeLists.txt
+		-i CMakeLists.txt || die
 }