diff --git a/src/video_core/page_manager.cpp b/src/video_core/page_manager.cpp
index a5d065ba5..a49fff43a 100644
--- a/src/video_core/page_manager.cpp
+++ b/src/video_core/page_manager.cpp
@@ -10,7 +10,7 @@
 #include "core/signals.h"
 #include "video_core/page_manager.h"
 #include "video_core/renderer_vulkan/vk_rasterizer.h"
-#define ENABLE_USERFAULTFD 1
+
 #ifndef _WIN64
 #include <sys/mman.h>
 #ifdef ENABLE_USERFAULTFD
@@ -142,6 +142,9 @@ struct PageManager::Impl {
     }
 
     void Protect(VAddr address, size_t size, bool allow_write) {
+        ASSERT_MSG(owned_ranges.find(address) != owned_ranges.end(),
+                   "Attempted to track non-GPU memory at address {:#x}, size {:#x}.", address,
+                   size);
 #ifdef _WIN32
         DWORD prot = allow_write ? PAGE_READWRITE : PAGE_READONLY;
         DWORD old_prot{};
diff --git a/src/video_core/renderer_vulkan/liverpool_to_vk.cpp b/src/video_core/renderer_vulkan/liverpool_to_vk.cpp
index 48c055534..a68ec1e74 100644
--- a/src/video_core/renderer_vulkan/liverpool_to_vk.cpp
+++ b/src/video_core/renderer_vulkan/liverpool_to_vk.cpp
@@ -212,8 +212,6 @@ vk::SamplerAddressMode ClampMode(AmdGpu::ClampMode mode) {
         [[fallthrough]];
     case AmdGpu::ClampMode::ClampBorder:
         return vk::SamplerAddressMode::eClampToBorder;
-    case AmdGpu::ClampMode::ClampHalfBorder:
-        return vk::SamplerAddressMode::eClampToBorder;
     default:
         UNREACHABLE();
     }