diff --git a/pkgs/tools/security/rng-tools/default.nix b/pkgs/tools/security/rng-tools/default.nix
index d4fb4676e4a..ec7a387af24 100644
--- a/pkgs/tools/security/rng-tools/default.nix
+++ b/pkgs/tools/security/rng-tools/default.nix
@@ -12,7 +12,7 @@
   # https://www.nist.gov/programs-projects/nist-randomness-beacon
 , curl, jansson, libxml2, withNistBeacon ? false
 , libp11, opensc, withPkcs11 ? true
-, librtlsdr, withRtlsdr ? true
+, rtl-sdr, withRtlsdr ? true
 }:
 
 stdenv.mkDerivation rec {
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     ++ lib.optionals withJitterEntropy [ jitterentropy ]
     ++ lib.optionals withNistBeacon    [ curl jansson libxml2 ]
     ++ lib.optionals withPkcs11        [ libp11 libp11.passthru.openssl ]
-    ++ lib.optionals withRtlsdr        [ librtlsdr ];
+    ++ lib.optionals withRtlsdr        [ rtl-sdr ];
 
   enableParallelBuilding = true;