diff --git a/arm9/source/lua/gm9internalfs.c b/arm9/source/lua/gm9internalfs.c
index 56035c4..a9ce38c 100644
--- a/arm9/source/lua/gm9internalfs.c
+++ b/arm9/source/lua/gm9internalfs.c
@@ -618,13 +618,18 @@ static int internalfs_allow(lua_State* L) {
 };
 
 static int internalfs_verify(lua_State* L) {
-    CheckLuaArgCount(L, 1, "_fs.verify");
+    bool extra = CheckLuaArgCountPlusExtra(L, 1, "_fs.verify");
     const char* path = luaL_checkstring(L, 1);
     bool res;
 
+    u32 flags = 0;
+    if (extra) {
+        flags = GetFlagsFromTable(L, 2, flags, SIG_CHECK);
+    }
+
     u64 filetype = IdentifyFileType(path);
     if (filetype & IMG_NAND) res = (ValidateNandDump(path) == 0);
-    else res = (VerifyGameFile(path, false) == 0);
+    else res = (VerifyGameFile(path, flags & SIG_CHECK) == 0);
 
     lua_pushboolean(L, res);
     return 1;
diff --git a/arm9/source/lua/gm9lua.h b/arm9/source/lua/gm9lua.h
index 371d089..41db975 100644
--- a/arm9/source/lua/gm9lua.h
+++ b/arm9/source/lua/gm9lua.h
@@ -13,10 +13,11 @@
 #define INCLUDE_DIRS    (1UL<<15)
 #define EXPLORER        (1UL<<16)
 #define ENCRYPTED       (1UL<<17)
+#define SIG_CHECK       (1UL<<18)
 
-#define FLAGS_STR       "no_cancel", "silent", "calc_sha", "sha1", "skip", "overwrite", "append", "all", "recursive", "to_emunand", "legit", "first", "include_dirs", "explorer", "encrypted"
-#define FLAGS_CONSTS    NO_CANCEL, SILENT, CALC_SHA, USE_SHA1, SKIP_ALL, OVERWRITE_ALL, APPEND_ALL, ASK_ALL, RECURSIVE, TO_EMUNAND, LEGIT, FIND_FIRST, INCLUDE_DIRS, EXPLORER, ENCRYPTED
-#define FLAGS_COUNT     15
+#define FLAGS_STR       "no_cancel", "silent", "calc_sha", "sha1", "skip", "overwrite", "append", "all", "recursive", "to_emunand", "legit", "first", "include_dirs", "explorer", "encrypted", "sig_check"
+#define FLAGS_CONSTS    NO_CANCEL, SILENT, CALC_SHA, USE_SHA1, SKIP_ALL, OVERWRITE_ALL, APPEND_ALL, ASK_ALL, RECURSIVE, TO_EMUNAND, LEGIT, FIND_FIRST, INCLUDE_DIRS, EXPLORER, ENCRYPTED, SIG_CHECK
+#define FLAGS_COUNT     16
 
 #define LUASCRIPT_EXT      "lua"
 #define LUASCRIPT_MAX_SIZE STD_BUFFER_SIZE