diff --git a/configure.ac b/configure.ac
index 3e02bd9..a88ff42 100644
--- a/configure.ac
+++ b/configure.ac
@@ -36,11 +36,6 @@ if test "x$PKG_CONFIG_INSTALLED" = "xno"; then
 fi
 PKG_PROG_PKG_CONFIG([0.20])
 
-dnl check for AX_CHECK_COMPILE_FLAG
-m4_ifdef([AX_CHECK_COMPILE_FLAG], [], [
-	AC_MSG_ERROR([Please install autoconf-archive; re-run 'autoreconf -fi' for it to take effect.])
-	])
-
 dnl checks for libraries
 AC_SEARCH_LIBS([dlopen], [dl dld], [LIBRARY_DL="$LIBS";LIBS=""])
 AC_SUBST(LIBRARY_DL)
@@ -113,13 +108,6 @@ AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])],
 CFLAGS="$saved_CFLAGS"
 AC_SUBST(SYMBOL_VISIBILITY)
 
-AX_CHECK_COMPILE_FLAG([-Werror=implicit], [CFLAGS="$CFLAGS -Werror=implicit"])
-AX_CHECK_COMPILE_FLAG([-Werror=maybe-uninitialized], [CFLAGS="$CFLAGS -Werror=maybe-uninitialized"])
-AX_CHECK_COMPILE_FLAG([-Werror=memset-transposed-args], [CFLAGS="$CFLAGS -Werror=memset-transposed-args"])
-AX_CHECK_COMPILE_FLAG([-Wnull-dereference], [CFLAGS="$CFLAGS -Wnull-dereference"])
-AX_CHECK_COMPILE_FLAG([-Werror=sizeof-array-argument], [CFLAGS="$CFLAGS -Werror=sizeof-array-argument"])
-AX_CHECK_COMPILE_FLAG([-Werror=sizeof-pointer-memaccess], [CFLAGS="$CFLAGS -Werror=sizeof-pointer-memaccess"])
-
 # Coverage build taken from WebKit's configure.in
 AC_MSG_CHECKING([whether to enable code coverage support])
 AC_ARG_ENABLE(coverage,
diff --git a/contrib/osmo-hnbgw.spec.in b/contrib/osmo-hnbgw.spec.in
index 5ab0f5a..1d30e56 100644
--- a/contrib/osmo-hnbgw.spec.in
+++ b/contrib/osmo-hnbgw.spec.in
@@ -24,7 +24,6 @@ License:        AGPL-3.0-or-later AND GPL-2.0-or-later
 Group:          Hardware/Mobile
 URL:            https://osmocom.org/projects/osmohnbgw
 Source:         %{name}-%{version}.tar.xz
-BuildRequires:  autoconf-archive
 BuildRequires:  automake >= 1.9
 BuildRequires:  libtool >= 2
 BuildRequires:  lksctp-tools-devel
diff --git a/debian/control b/debian/control
index 1ea3ad2..d9ab85f 100644
--- a/debian/control
+++ b/debian/control
@@ -6,7 +6,6 @@ Build-Depends: debhelper (>=9),
                dh-autoreconf,
                autotools-dev,
                autoconf,
-               autoconf-archive,
                automake,
                libtool,
                pkg-config,