diff --git a/src/backend.ts b/src/backend.ts
index 9d55f77..84be8a9 100644
--- a/src/backend.ts
+++ b/src/backend.ts
@@ -236,7 +236,7 @@ export async function setGpuSlowMemory(clock: number): Promise<number> {
     return (await call_backend("GPU_set_slow_memory", [clock]))[0];
 }
 
-export async function getGpuSlowMemory(): Promise<number> {
+export async function getGpuSlowMemory(): Promise<number | null> {
     return (await call_backend("GPU_get_slow_memory", []))[0];
 }
 
diff --git a/src/index.tsx b/src/index.tsx
index ae24558..257db52 100755
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -170,7 +170,7 @@ const reload = function() {
     set_value(CLOCK_MIN_GPU, limits[0]);
     set_value(CLOCK_MAX_GPU, limits[1]);
   });
-  backend.resolve(backend.getGpuSlowMemory(), (status: number) => { set_value(SLOW_MEMORY_GPU, status) });
+  backend.resolve_nullable(backend.getGpuSlowMemory(), (status: number | null) => { set_value(SLOW_MEMORY_GPU, status) });
 
   backend.resolve(backend.getGeneralPersistent(), (value: boolean) => { set_value(PERSISTENT_GEN, value) });
   backend.resolve(backend.getGeneralSettingsName(), (name: string) => { set_value(NAME_GEN, name) });