diff --git a/libtracefs.changes b/libtracefs.changes
index 5c3e68a..1fd8901 100644
--- a/libtracefs.changes
+++ b/libtracefs.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Jun 21 11:27:48 UTC 2022 - Jan Engelhardt <jengelh@inai.de>
+
+- Force make -j1 during build because of object file corruption.
+
 -------------------------------------------------------------------
 Tue Jun  7 08:34:18 UTC 2022 - Daniel Wagner <daniel.wagner@suse.com>
 
diff --git a/libtracefs.spec b/libtracefs.spec
index e58a322..3543fe1 100644
--- a/libtracefs.spec
+++ b/libtracefs.spec
@@ -53,15 +53,20 @@ This subpackage contains the header files.
 %autosetup -p1
 
 %build
-%make_build prefix="%_prefix"
+# Not parallel safe - to the point where there is silent corruption
+# (compared to a more common "file not found" in other packages)
+%make_build -j1 V=1 prefix="%_prefix"
 
 %install
-%make_install prefix="%_prefix" \
+%make_install -j1 V=1 prefix="%_prefix" \
 	pkgconfig_dir=%{_libdir}/pkgconfig \
         %nil
 # always the same issues
 find "%buildroot/%_includedir" -type f -name "*.h" -exec chmod a-x {} +
 rm -f "%buildroot/%_libdir"/*.a
+if ldd -r "%buildroot/%_libdir/libtracefs.so" 2>&1 | grep -q undefined; then
+	exit 1
+fi
 
 %post   -n %lname -p /sbin/ldconfig
 %postun -n %lname -p /sbin/ldconfig