diff --git a/Core/FileSystems/BlockDevices.cpp b/Core/FileSystems/BlockDevices.cpp
index 1e7dd8402c..c5e2add3fd 100644
--- a/Core/FileSystems/BlockDevices.cpp
+++ b/Core/FileSystems/BlockDevices.cpp
@@ -395,6 +395,17 @@ NPDRMDemoBlockDevice::NPDRMDemoBlockDevice(FileLoader *fileLoader)
 		ERROR_LOG(Log::Loader, "Invalid NPUMDIMG header!");
 	}
 
+	u32 psar_id;
+	fileLoader->ReadAt(psarOffset, 4, 1, &psar_id);
+
+	INFO_LOG(Log::Loader, "NPDRM: PSAR ID: %08x");
+	// PS1 PSAR begins with "PSISOIMG0000"
+	if (psar_id == 'SISP') {
+		lbaSize_ = 0;  // Mark invalid
+		ERROR_LOG(Log::Loader, "PSX not supported! Should have been caught earlier.");
+		return;
+	}
+
 	kirk_init();
 
 	// getkey
diff --git a/UI/MainScreen.cpp b/UI/MainScreen.cpp
index 40a3558869..411e5f59c1 100644
--- a/UI/MainScreen.cpp
+++ b/UI/MainScreen.cpp
@@ -1072,6 +1072,7 @@ UI::EventReturn GameBrowser::GridSettingsClick(UI::EventParams &e) {
 }
 
 UI::EventReturn GameBrowser::OnRecentClear(UI::EventParams &e) {
+	_assert_(screenManager_);
 	screenManager_->RecreateAllViews();
 	System_Notify(SystemNotification::UI);
 	return UI::EVENT_DONE;
diff --git a/Windows/main.cpp b/Windows/main.cpp
index 57e13bb7de..01f6b1dfb3 100644
--- a/Windows/main.cpp
+++ b/Windows/main.cpp
@@ -121,7 +121,7 @@ static double g_lastActivity = 0.0;
 static double g_lastKeepAwake = 0.0;
 // Time until we stop considering the core active without user input.
 // Should this be configurable?  2 hours currently.
-static const double ACTIVITY_IDLE_TIMEOUT = 2.0 * 3600.0;
+static constexpr double ACTIVITY_IDLE_TIMEOUT = 2.0 * 3600.0;
 
 void System_LaunchUrl(LaunchUrlType urlType, const char *url) {
 	ShellExecute(NULL, L"open", ConvertUTF8ToWString(url).c_str(), NULL, NULL, SW_SHOWNORMAL);