diff --git a/pkgs/data/misc/dtv-scan-tables/default.nix b/pkgs/data/misc/dtv-scan-tables/default.nix
index 741823871f4a..1761f36c36c2 100644
--- a/pkgs/data/misc/dtv-scan-tables/default.nix
+++ b/pkgs/data/misc/dtv-scan-tables/default.nix
@@ -19,8 +19,8 @@ stdenv.mkDerivation rec {
     v4l-utils
   ];
 
-  installFlags = [
-    "DATADIR=$(out)"
+  makeFlags = [
+    "PREFIX=$(out)"
   ];
 
   meta = with lib; {
diff --git a/pkgs/servers/tvheadend/default.nix b/pkgs/servers/tvheadend/default.nix
index 72945ffaedbb..833d31de4013 100644
--- a/pkgs/servers/tvheadend/default.nix
+++ b/pkgs/servers/tvheadend/default.nix
@@ -105,7 +105,7 @@ in stdenv.mkDerivation {
       --replace /usr/bin/tar ${gnutar}/bin/tar
 
     substituteInPlace src/input/mpegts/scanfile.c \
-      --replace /usr/share/dvb ${dtv-scan-tables}/dvbv5
+      --replace /usr/share/dvb ${dtv-scan-tables}/share/dvbv5
 
     # the version detection script `support/version` reads this file if it
     # exists, so let's just use that