diff --git a/blktrace.spec b/blktrace.spec
index 2381b11089ca7decc1bcd2cee33c472abdc788cf..062e5becf973d79d1c44dd216df914280e5721c7 100644
--- a/blktrace.spec
+++ b/blktrace.spec
@@ -32,7 +32,7 @@ This contains man files for the using of blktrace.
 %autosetup -Sgit -n %{name}-%{version}
 
 %build
-%make_build all
+%make_build -j1 all
 
 %install
 make dest=%{buildroot} prefix=%{buildroot}/%{_prefix} mandir=%{buildroot}/%{_mandir} install