diff --git a/src/config/ConfigManager.cpp b/src/config/ConfigManager.cpp
index e59c1a32..291b31e8 100644
--- a/src/config/ConfigManager.cpp
+++ b/src/config/ConfigManager.cpp
@@ -1052,6 +1052,10 @@ void CConfigManager::loadConfigLoadVars() {
     // update layout
     g_pLayoutManager->switchToLayout(configValues["general:layout"].strValue);
 
+    // mark blur dirty
+    for (auto& m : g_pCompositor->m_vMonitors)
+        g_pHyprOpenGL->markBlurDirtyForMonitor(m.get());
+
     // Force the compositor to fully re-render all monitors
     for (auto& m : g_pCompositor->m_vMonitors)
         m->forceFullFrames = 2;