diff --git a/harec.changes b/harec.changes
index 443b179..5f1e6db 100644
--- a/harec.changes
+++ b/harec.changes
@@ -10,6 +10,8 @@ Sat Jan 20 07:21:00 UTC 2024 - Soc Virnyl Estela <uncomfy+openbuildservice@uncom
   * OpenBSD: fix tests
   * replace ./configure with config.mk
   * fix confusing wording in parse.c
+- Update specfile
+  * Adopt new makefile to new configs
 
 -------------------------------------------------------------------
 Sat Dec 23 08:12:46 UTC 2023 - Soc Virnyl Estela <uncomfy+openbuildservice@uncomfyhalomacro.pl>
diff --git a/harec.spec b/harec.spec
index 386826a..64ab1f2 100644
--- a/harec.spec
+++ b/harec.spec
@@ -36,28 +36,40 @@ POSIX-compatible systems.
 
 %prep
 %setup -q
-mkdir -p build/
 
 %build
-export CFLAGS="%optflags"
+cat > config.mk <<-SH
+PREFIX = %{_prefix}
+BINDIR = %{_bindir}
 
-# Harec does not use autoconf
-pushd build/
-../configure
-make %{?_smp_mflags} VERSION="%{version}"
-popd
+PLATFORM = linux
+ARCH = %{_arch}
+HARECFLAGS =
+QBEFLAGS =
+ASFLAGS =
+LDLINKFLAGS = --gc-sections -z noexecstack
+CFLAGS = %{optflags}
+LDFLAGS = %{build_ldflags}
+
+CC = cc
+AS = as
+LD = ld
+QBE = qbe
+
+HARECACHE = .cache
+BINOUT = .bin
+
+DEFAULT_TARGET = %{_arch}
+VERSION = %{version}
+SH
+
+make
 
 %install
-export CFLAGS="%optflags"
-pushd build/
-make %{?_smp_mflags} VERSION="%{version}" DESTDIR="%{buildroot}" BINDIR="%{_bindir}" install
-popd
+make DESTDIR=%{buildroot} install
 
 %check
-export CFLAGS="%optflags"
-cd build
-../configure
-make %{?_smp_mflags} check
+make check
 
 %files
 %{_bindir}/%{name}