diff --git a/pkgs/applications/graphics/openboard/default.nix b/pkgs/applications/graphics/openboard/default.nix
index 73166ea4d52..e1dda5000fa 100644
--- a/pkgs/applications/graphics/openboard/default.nix
+++ b/pkgs/applications/graphics/openboard/default.nix
@@ -96,7 +96,7 @@ in mkDerivation rec {
     install -m644 resources/linux/openboard-ubz.xml $out/opt/openboard/etc/
     install -Dm644 resources/images/OpenBoard.png $out/share/icons/hicolor/64x64/apps/OpenBoard.png
 
-    runHook postBuild
+    runHook postInstall
   '';
 
   dontWrapQtApps = true;