diff --git a/pkgs/applications/audio/viper4linux-gui/default.nix b/pkgs/applications/audio/viper4linux-gui/default.nix
index be495aa9c93b..ee8593c8e620 100644
--- a/pkgs/applications/audio/viper4linux-gui/default.nix
+++ b/pkgs/applications/audio/viper4linux-gui/default.nix
@@ -66,7 +66,7 @@ stdenv.mkDerivation rec {
   ];
 
   installPhase = ''
-    runHook preInstalli
+    runHook preInstall
     install -D V4L_Frontend $out/bin/viper-gui
     install -D icons/viper.png $out/share/icons/viper.png
     runHook postInstall