diff --git a/libfcache.changes b/libfcache.changes
index f36cdba..bb6c84e 100644
--- a/libfcache.changes
+++ b/libfcache.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Sat Nov 26 16:43:24 UTC 2022 - Jan Engelhardt <jengelh@inai.de>
+
+- Delete system-libs.patch (not needed - system libs are
+  autodetected)
+
 -------------------------------------------------------------------
 Mon Aug  8 11:37:44 UTC 2022 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/libfcache.spec b/libfcache.spec
index 0998719..ebfd065 100644
--- a/libfcache.spec
+++ b/libfcache.spec
@@ -27,14 +27,14 @@ URL:            https://github.com/libyal/libfcache
 Source:         https://github.com/libyal/libfcache/releases/download/%version/libfcache-alpha-%version.tar.gz
 Source2:        https://github.com/libyal/libfcache/releases/download/%version/libfcache-alpha-%version.tar.gz.asc
 Source9:        %name.keyring
-Patch1:         system-libs.patch
 BuildRequires:  c_compiler
 BuildRequires:  gettext-tools >= 0.18.1
 BuildRequires:  libtool
 BuildRequires:  pkg-config
 BuildRequires:  pkgconfig(libcdata) >= 20210625
-BuildRequires:  pkgconfig(libcerror) >= 20201121
-BuildRequires:  pkgconfig(libcthreads) >= 20200508
+BuildRequires:  pkgconfig(libcerror) >= 20220101
+BuildRequires:  pkgconfig(libcthreads) >= 20220102
+# Various notes: https://en.opensuse.org/libyal
 
 %description
 Library to provide generic file data cache functions for the libyal family of libraries.
@@ -62,9 +62,9 @@ applications that want to make use of libfcache.
 
 %build
 autoreconf -fi
-# see libcdata for version-sc
 echo "V_%version { global: *; };" >v.sym
 %configure --disable-static LDFLAGS="-Wl,--version-script=$PWD/v.sym"
+grep '  local' config.log && exit 1
 %make_build
 
 %install
diff --git a/system-libs.patch b/system-libs.patch
deleted file mode 100644
index ddc7b59..0000000
--- a/system-libs.patch
+++ /dev/null
@@ -1,49 +0,0 @@
-From: Jan Engelhardt <jengelh@inai.de>
-Date: 2021-05-12 17:36:02.536572543 +0200
-
-Some dirs are not present in snapshots directly generated from git
-(nor are they marked as a submodule). Patch it out, since we have
-them as system libs.
----
- Makefile.am  |    6 ------
- configure.ac |    3 ---
- 2 files changed, 9 deletions(-)
-
-Index: libfcache/Makefile.am
-===================================================================
---- libfcache.orig/Makefile.am
-+++ libfcache/Makefile.am
-@@ -3,9 +3,6 @@ ACLOCAL_AMFLAGS = -I m4
- SUBDIRS = \
- 	include \
- 	common \
--	libcerror \
--	libcthreads \
--	libcdata \
- 	libfcache \
- 	po \
- 	manuals \
-@@ -55,9 +52,6 @@ lib: library
- 
- library:
- 	(cd $(srcdir)/common && $(MAKE) $(AM_MAKEFLAGS))
--	(cd $(srcdir)/libcerror && $(MAKE) $(AM_MAKEFLAGS))
--	(cd $(srcdir)/libcthreads && $(MAKE) $(AM_MAKEFLAGS))
--	(cd $(srcdir)/libcdata && $(MAKE) $(AM_MAKEFLAGS))
- 	(cd $(srcdir)/libfcache && $(MAKE) $(AM_MAKEFLAGS))
- 	(cd $(srcdir)/po && $(MAKE) $(AM_MAKEFLAGS))
- 
-Index: libfcache/configure.ac
-===================================================================
---- libfcache.orig/configure.ac
-+++ libfcache/configure.ac
-@@ -97,9 +97,6 @@ dnl Generate Makefiles
- AC_CONFIG_FILES([Makefile])
- AC_CONFIG_FILES([include/Makefile])
- AC_CONFIG_FILES([common/Makefile])
--AC_CONFIG_FILES([libcerror/Makefile])
--AC_CONFIG_FILES([libcthreads/Makefile])
--AC_CONFIG_FILES([libcdata/Makefile])
- AC_CONFIG_FILES([libfcache/Makefile])
- AC_CONFIG_FILES([po/Makefile.in])
- AC_CONFIG_FILES([po/Makevars])