diff --git a/rng-tools.spec b/rng-tools.spec
index cbbb4a6..5a41f18 100644
--- a/rng-tools.spec
+++ b/rng-tools.spec
@@ -1,16 +1,18 @@
 %global _hardened_build 1
 %global _sbindir /sbin
+
 %if 0%{?rhel} && 0%{?rhel} >= 9
 %bcond_with    pkcs11
+%bcond_with    rtlsdr
 %else
 %bcond_without pkcs11
+%bcond_without rtlsdr
 %endif
 
-
 Summary:        Random number generator related utilities
 Name:           rng-tools
 Version:        6.10
-Release:        6%{?dist}
+Release:        7%{?dist}
 License:        GPLv2+
 URL:            https://github.com/nhorman/rng-tools
 Source0:        https://github.com/nhorman/rng-tools/archive/rng-tools-%{version}.tar.gz
@@ -19,15 +21,17 @@ Source1:        rngd.service
 # https://sourceforge.net/p/gkernel/patches/111/
 
 BuildRequires: gcc make
-BuildRequires:  gettext
-BuildRequires:  systemd-units
+BuildRequires: gettext
+BuildRequires: systemd-units
 BuildRequires: libgcrypt-devel
 BuildRequires: autoconf automake
 BuildRequires: libsysfs-devel libcurl-devel
 BuildRequires: libxml2-devel openssl-devel
 BuildRequires: jitterentropy-devel
 BuildRequires: jansson-devel
+%if %{with rtlsdr}
 BuildRequires: rtl-sdr-devel
+%endif
 %if %{with pkcs11}
 BuildRequires: libp11-devel
 %endif
@@ -40,16 +44,19 @@ Provides: jitterentropy-rngd
 %description
 Hardware random number generation tools.
 
-%prep 
-%autosetup 
+%prep
+%autosetup
 
 %build
-./autogen.sh
-%if %{with pkcs11}
-%configure
-%else
-%configure --without-pkcs11
+%if !%{with pkcs11}
+%define _without_pkcs11 --without-pkcs11
 %endif
+%if !%{with rtlsdr}
+%define _without_rtlsdr --without-rtlsdr
+%endif
+
+./autogen.sh
+%configure %{?_without_pkcs11} %{?_without_rtlsdr}
 %make_build
 
 %install
@@ -78,6 +85,10 @@ install -Dt %{buildroot}%{_unitdir} -m0644 %{SOURCE1}
 %attr(0644,root,root)   %{_unitdir}/rngd.service
 
 %changelog
+* Mon Nov 16 2020 Vladis Dronov <vdronov@redhat.com> - 6.10-7
+- Make rtl-sdr optional
+- For RHEL9 and above, do not build with rtl-sdr
+
 * Mon Oct 05 2020 Troy Dawson <tdawson@redhat.com> - 6.10-6
 - Make pkcs11 optional
 - For RHEL9 and above, do not build with pkcs11