diff --git a/sympy.spec b/sympy.spec
index 78df19d..b71afe6 100644
--- a/sympy.spec
+++ b/sympy.spec
@@ -19,6 +19,7 @@ BuildRequires:  gettext
 BuildRequires:  graphviz
 BuildRequires:  ImageMagick
 BuildRequires:  librsvg2-tools
+BuildRequires:  make
 BuildRequires:  parallel
 BuildRequires:  procps
 BuildRequires:  python3-devel
@@ -144,7 +145,7 @@ if [ "%{maxpyint}" != "7fffffff" ]; then
   # Split into many small chunks to reduce waiting in the end-game
   jobs=%{?_smp_mflags}; jobs=${jobs#-j}; jobs=$((jobs * 3))
 
-  xvfb-run -a -n $dnum \
+  xvfb-run -d \
       parallel %{?_smp_mflags} \
       %{python3} bin/test -v --split {}/$jobs \
       ::: $(bash -c "echo {1..$jobs}")