diff --git a/dev-libs/pfs/files/pfs-0.10.0-Werror.patch b/dev-libs/pfs/files/pfs-0.10.0-Werror.patch
new file mode 100644
index 0000000000000..c319d4b6e9849
--- /dev/null
+++ b/dev-libs/pfs/files/pfs-0.10.0-Werror.patch
@@ -0,0 +1,11 @@
+--- a/CMakeLists.txt	2024-05-21 20:11:22.098008343 +0200
++++ b/CMakeLists.txt	2024-05-21 20:11:35.538853965 +0200
+@@ -31,7 +31,7 @@
+ # Actual configuration
+ # ------------------------------------------------------------------------
+ 
+-add_compile_options (-std=c++11 -Wall -Wextra -pedantic -Werror)
++add_compile_options (-std=c++11 -Wall -Wextra -pedantic)
+ 
+ set (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/out)
+ set (CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
diff --git a/dev-libs/pfs/pfs-0.10.0.ebuild b/dev-libs/pfs/pfs-0.10.0.ebuild
index 8cd01f1adc853..c1e363f9d030d 100644
--- a/dev-libs/pfs/pfs-0.10.0.ebuild
+++ b/dev-libs/pfs/pfs-0.10.0.ebuild
@@ -16,6 +16,8 @@ KEYWORDS="~amd64"
 IUSE="test"
 RESTRICT="!test? ( test )"
 
+PATCHES=( "${FILESDIR}"/${P}-Werror.patch )
+
 src_configure() {
 	local mycmakeargs=(
 		-Dpfs_BUILD_TESTS=$(usex test)