diff --git a/BUILD.gn b/BUILD.gn
index 8e71ce574b2970d0043c221ad3933eaf06f1bcd7..4e2439318d77506bc5b136d411648c9a6a5f2cb6 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -27,7 +27,10 @@ target_dir = "${target_gen_dir}/sane"
 action("backends_action") {
   print("backends_action is exec")
   script = "//third_party/backends/install.py"
-  inputs = [ "${source_dir}/patches/modifying_driver_search_path.patch" ]
+  inputs = [
+    "${source_dir}/patches/modifying_driver_search_path.patch",
+    "${source_dir}/patches/dll.c.patch"
+  ]
   outputs = [
     "${target_dir}/include/config.h",
     "${target_dir}/src/dll.c",
diff --git a/install.py b/install.py
index 1e12b2a27836fabe97c6489fdfe80431237c19f6..fcd1ea83ef701146e777f41060d01c0e264c8742 100755
--- a/install.py
+++ b/install.py
@@ -23,7 +23,8 @@ import shutil
 
 def apply_patch(source_dir):
     patch_list = [
-        'modifying_driver_search_path.patch'
+        'modifying_driver_search_path.patch',
+        'dll.c.patch'
     ]
 
     for patch in patch_list:
diff --git a/patches/dll.c.patch b/patches/dll.c.patch
new file mode 100644
index 0000000000000000000000000000000000000000..84b2ef77dae3bf75d1a3bc643f8a387636688af5
--- /dev/null
+++ b/patches/dll.c.patch
@@ -0,0 +1,17 @@
+diff --git a/backend/dll.c b/backend/dll.c
+index 7cb7fd508..69918099f 100644
+--- a/backend/dll.c
++++ b/backend/dll.c
+@@ -1349,6 +1349,12 @@ sane_open (SANE_String_Const full_name, SANE_Handle * meta_handle)
+     }
+   free(be_name);
+
++  if (!be)
++    {
++      DBG (3, "sane_open: be is nullptr\n");
++      return SANE_STATUS_NO_MEM;
++    }
++
+   if (!be->inited)
+     {
+       status = init (be);
\ No newline at end of file
diff --git a/patches/patches.json b/patches/patches.json
deleted file mode 100644
index bb7e9f788bee51fe3a1557c6b862dd054cc83e97..0000000000000000000000000000000000000000
--- a/patches/patches.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-    "patches": [
-        {
-            "project": "print_print_fwk",
-            "path": "base/print/print_fwk",
-            "pr_url": "https://gitee.com/openharmony/print_print_fwk/pulls/288"
-        }
-    ]
-}
\ No newline at end of file