diff --git a/.changeset/twenty-windows-add.md b/.changeset/twenty-windows-add.md
new file mode 100644
index 0000000..f6a686f
--- /dev/null
+++ b/.changeset/twenty-windows-add.md
@@ -0,0 +1,5 @@
+---
+"nxjs-runtime": patch
+---
+
+Copy buffer for `Application#icon` and `Application#nacp`
diff --git a/source/ns.c b/source/ns.c
index dc1e4ad..150807e 100644
--- a/source/ns.c
+++ b/source/ns.c
@@ -112,7 +112,7 @@ static JSValue nx_ns_app_nacp(JSContext *ctx, JSValueConst this_val, int argc, J
 	{
 		return JS_EXCEPTION;
 	}
-	return JS_NewArrayBuffer(ctx, (uint8_t *)&app->data.nacp, sizeof(app->data.nacp), NULL, NULL, false);
+	return JS_NewArrayBufferCopy(ctx, (uint8_t *)&app->data.nacp, sizeof(app->data.nacp));
 }
 
 static JSValue nx_ns_app_icon(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv)
@@ -126,7 +126,7 @@ static JSValue nx_ns_app_icon(JSContext *ctx, JSValueConst this_val, int argc, J
 	{
 		return JS_UNDEFINED;
 	}
-	return JS_NewArrayBuffer(ctx, (uint8_t *)&app->data.icon, app->icon_size, NULL, NULL, false);
+	return JS_NewArrayBufferCopy(ctx, (uint8_t *)&app->data.icon, app->icon_size);
 }
 
 static JSValue nx_ns_app_name(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv)