diff --git a/default/hypr/envs.lua b/default/hypr/envs.lua
index b4a95df4..4eb9c945 100644
--- a/default/hypr/envs.lua
+++ b/default/hypr/envs.lua
@@ -11,7 +11,6 @@ hl.env("HYPRCURSOR_SIZE", "24")
 -- Force all apps to use Wayland.
 hl.env("GDK_BACKEND", "wayland,x11,*")
 hl.env("QT_QPA_PLATFORM", "wayland;xcb")
-hl.env("QT_STYLE_OVERRIDE", "kvantum")
 hl.env("QT_QPA_PLATFORMTHEME", "gtk3")
 hl.env("MOZ_ENABLE_WAYLAND", "1")
 hl.env("ELECTRON_OZONE_PLATFORM_HINT", "wayland")
diff --git a/install/omarchy-base.packages b/install/omarchy-base.packages
index dbc965aa..13ee9a91 100644
--- a/install/omarchy-base.packages
+++ b/install/omarchy-base.packages
@@ -64,7 +64,6 @@ networkmanager
 jq
 kdenlive
 kernel-modules-hook
-kvantum
 lazydocker
 lazygit
 less
diff --git a/migrations/1785351479.sh b/migrations/1785351479.sh
new file mode 100644
index 00000000..db366827
--- /dev/null
+++ b/migrations/1785351479.sh
@@ -0,0 +1,33 @@
+echo "Drop Kvantum now that Qt apps follow the theme through the GTK platform theme"
+
+# QT_STYLE_OVERRIDE is gone, so Kvantum is no longer painting anything -- Qt
+# falls back to built-in Fusion and takes its palette from
+# QT_QPA_PLATFORMTHEME=gtk3, which actually tracks the Omarchy theme. Kvantum
+# never did; we have never shipped a .kvconfig for it to read.
+#
+# kvantum-qt5 has to go in the same transaction: it is the only thing that
+# requires kvantum, so removing kvantum alone fails the dependency check. It has
+# been dead weight since VLC was retired anyway, and it takes qt5-svg and
+# qt5-x11extras with it.
+#
+# What this deliberately does NOT touch is qt5-wayland and qt5-declarative. On a
+# machine whose sddm theme metadata predates QtVersion=6, those are what keep
+# the Qt5 greeter able to start, and removing them is how you end up with no
+# login screen. qt5-wayland is explicitly installed, so the -s cascade leaves it
+# and the qt5-base beneath it alone.
+targets=()
+for pkg in kvantum-qt5 kvantum; do
+  pacman -Q "$pkg" &>/dev/null && targets+=("$pkg")
+done
+
+if ((${#targets[@]})); then
+  # Preflight so a surprise reverse dependency prints our sentence rather than a
+  # wall of pacman errors, and so neither outcome exits non-zero -- a failing
+  # migration aborts every migration queued behind it.
+  if pacman -Rs --print "${targets[@]}" >/dev/null 2>&1; then
+    sudo pacman -Rns --noconfirm "${targets[@]}" ||
+      echo "Could not remove Kvantum; leaving it installed." >&2
+  else
+    echo "Something still depends on Kvantum; leaving it installed." >&2
+  fi
+fi