diff --git a/pkgs/by-name/ti/tiscamera/package.nix b/pkgs/by-name/ti/tiscamera/package.nix
index ba2ccf7016f0..1d7856dd6fc3 100644
--- a/pkgs/by-name/ti/tiscamera/package.nix
+++ b/pkgs/by-name/ti/tiscamera/package.nix
@@ -112,19 +112,24 @@ stdenv.mkDerivation (finalAttrs: {
     "-DCMAKE_POLICY_VERSION_MINIMUM=3.10"
   ];
 
-  env.CXXFLAGS = "-include cstdint";
-
   doCheck = true;
 
   # gstreamer tests requires, besides gst-plugins-bad, plugins installed by this expression.
   checkPhase = "ctest --force-new-ctest-process -E gstreamer";
 
-  # wrapGAppsHook3: make sure we add ourselves to the introspection
-  # and gstreamer paths.
-  GI_TYPELIB_PATH = "${placeholder "out"}/lib/girepository-1.0";
-  GST_PLUGIN_SYSTEM_PATH_1_0 = "${placeholder "out"}/lib/gstreamer-1.0";
+  env = {
+    # wrapGAppsHook3: make sure we add ourselves to the introspection
+    # and gstreamer paths.
+    GI_TYPELIB_PATH = "${placeholder "out"}/lib/girepository-1.0";
+    GST_PLUGIN_SYSTEM_PATH_1_0 = "${placeholder "out"}/lib/gstreamer-1.0";
 
-  QT_PLUGIN_PATH = lib.optionalString withGui "${qt5.qtbase.bin}/${qt5.qtbase.qtPluginPrefix}";
+    QT_PLUGIN_PATH = lib.optionalString withGui "${qt5.qtbase.bin}/${qt5.qtbase.qtPluginPrefix}";
+
+    CXXFLAGS = toString [
+      "-include"
+      "cstdint"
+    ];
+  };
 
   dontWrapQtApps = true;