diff --git a/SPECS/libnbd.spec b/SPECS/libnbd.spec
index 0020064..fdeef5c 100644
--- a/SPECS/libnbd.spec
+++ b/SPECS/libnbd.spec
@@ -1,4 +1,5 @@
 # If we should verify tarball signature with GPGv2.
+%bcond_without nbdkit
 %global verify_tarball_signature 1
 
 # If there are patches which touch autotools files, set this to 1.
@@ -74,6 +75,7 @@ BuildRequires:  gcc-c++
 BuildRequires:  gnutls-utils
 #BuildRequires:  jq
 %ifnarch %{ix86}
+%if %{nbdkit}
 BuildRequires:  nbdkit
 BuildRequires:  nbdkit-data-plugin
 #BuildRequires:  nbdkit-eval-plugin
@@ -83,6 +85,7 @@ BuildRequires:  nbdkit-pattern-plugin
 BuildRequires:  nbdkit-sh-plugin
 #BuildRequires:  nbdkit-sparse-random-plugin
 #BuildRequires:  nbd
+%endif
 BuildRequires:  qemu-img
 %endif
 BuildRequires:  util-linux