diff --git a/libnbd.spec b/libnbd.spec
index d3a686d..a127cbc 100644
--- a/libnbd.spec
+++ b/libnbd.spec
@@ -48,11 +48,13 @@ BuildRequires:  glib2-devel
 
 # Only for running the test suite.
 BuildRequires:  gnutls-utils
+%if 0%{?fedora} >= 31
 BuildRequires:  nbdkit
 BuildRequires:  nbdkit-memory-plugin
 BuildRequires:  nbdkit-null-plugin
 BuildRequires:  nbdkit-pattern-plugin
 BuildRequires:  nbdkit-sh-plugin
+%endif
 BuildRequires:  nbd
 BuildRequires:  qemu-img
 BuildRequires:  gcc-c++