diff --git a/perl-Net-Server.spec b/perl-Net-Server.spec
index 975fa82..54301f6 100644
--- a/perl-Net-Server.spec
+++ b/perl-Net-Server.spec
@@ -107,7 +107,8 @@ mkdir -p %{buildroot}%{_libexecdir}/%{name}
 cp -a t %{buildroot}%{_libexecdir}/%{name}
 cat > %{buildroot}%{_libexecdir}/%{name}/test << 'EOF'
 #!/bin/sh
-cd %{_libexecdir}/%{name} && exec prove -I . -j "$(getconf _NPROCESSORS_ONLN)" -r
+# XXX Not possible to run in parallel
+cd %{_libexecdir}/%{name} && exec prove -I . -r
 EOF
 chmod +x %{buildroot}%{_libexecdir}/%{name}/test
 %{_fixperms} %{buildroot}/*
@@ -128,6 +129,8 @@ make test
 
 %changelog
 * Thu Nov 21 2024 Michal Josef Špaček <mspacek@redhat.com> - 2.014-9
+- Fix running of tests in perl-Net-Server-tests subpackage
+  Resolves: RHEL-65278
 - Sync OpenSSL Engine patch with upstream
 
 * Tue Oct 29 2024 Troy Dawson <tdawson@redhat.com> - 2.014-8