diff --git a/kernel.spec b/kernel.spec
index 7e7e77f..a62b46e 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -1652,7 +1652,7 @@ cat ../kernel_exclude_debug_files.%{flavour} >> $kernel_files
 LC_ALL=C sed -ri "s/^EXTRAVERSION.*/EXTRAVERSION = -%{fullrpmrel}/" Makefile
 
 %if %{build_perf}
-%smake -C tools/perf -s HAVE_CPLUS_DEMANGLE=1 prefix=%{_prefix} lib=%{_lib} NO_GTK2=1 all
+%smake -C tools/perf -s HAVE_CPLUS_DEMANGLE=1 WERROR=0 prefix=%{_prefix} lib=%{_lib} NO_GTK2=1 all
 %smake -C tools/perf -s prefix=%{_prefix} lib=%{_lib} NO_GTK2=1 man
 %endif