diff --git a/libfdatetime.changes b/libfdatetime.changes
index 0f83e64..62372ea 100644
--- a/libfdatetime.changes
+++ b/libfdatetime.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/libfdatetime.spec b/libfdatetime.spec
index 31668ac..2b8ab19 100644
--- a/libfdatetime.spec
+++ b/libfdatetime.spec
@@ -27,12 +27,10 @@ URL:            https://github.com/libyal/libfdatetime
 Source:         https://github.com/libyal/libfdatetime/releases/download/%version/libfdatetime-alpha-%version.tar.gz
 Source2:        https://github.com/libyal/libfdatetime/releases/download/%version/libfdatetime-alpha-%version.tar.gz.asc
 Source3:        %name.keyring
-Patch1:         system-libs.patch
 BuildRequires:  c_compiler
-BuildRequires:  gettext-tools >= 0.18.1
-BuildRequires:  libtool
 BuildRequires:  pkg-config
 BuildRequires:  pkgconfig(libcerror) >= 20220101
+# Various notes: https://en.opensuse.org/libyal
 
 %description
 A library for date and time data types. Part of the libyal family of libraries.
@@ -59,10 +57,9 @@ applications that want to make use of libfdatetime.
 %autosetup -p1
 
 %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 59b3301..0000000
--- a/system-libs.patch
+++ /dev/null
@@ -1,43 +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  |    2 --
- configure.ac |    1 -
- 2 files changed, 3 deletions(-)
-
-Index: libfdatetime/Makefile.am
-===================================================================
---- libfdatetime.orig/Makefile.am
-+++ libfdatetime/Makefile.am
-@@ -3,7 +3,6 @@ ACLOCAL_AMFLAGS = -I m4
- SUBDIRS = \
- 	include \
- 	common \
--	libcerror \
- 	libfdatetime \
- 	po \
- 	tests \
-@@ -53,7 +52,6 @@ lib: library
- 
- library:
- 	(cd $(srcdir)/common && $(MAKE) $(AM_MAKEFLAGS))
--	(cd $(srcdir)/libcerror && $(MAKE) $(AM_MAKEFLAGS))
- 	(cd $(srcdir)/libfdatetime && $(MAKE) $(AM_MAKEFLAGS))
- 	(cd $(srcdir)/po && $(MAKE) $(AM_MAKEFLAGS))
- 
-Index: libfdatetime/configure.ac
-===================================================================
---- libfdatetime.orig/configure.ac
-+++ libfdatetime/configure.ac
-@@ -91,7 +91,6 @@ 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([libfdatetime/Makefile])
- AC_CONFIG_FILES([po/Makefile.in])
- AC_CONFIG_FILES([po/Makevars])