diff --git a/docs/lua/guides/modfs.md b/docs/lua/guides/modfs.md
index 5e840db63..d4ac51abd 100644
--- a/docs/lua/guides/modfs.md
+++ b/docs/lua/guides/modfs.md
@@ -29,7 +29,7 @@ The ModFS files are located in the `sav` directory at the usual save file locati
   - Can contain only valid ASCII characters, no `*` or `\`
   - Cannot be called `properties.json` (this name is reserved for ModFS internal properties)
   - Only the following extensions (and extension-less files) are allowed:
-    - text: `.txt`, `.json`, `.ini`, `.sav`
+    - text: `.txt`, `.json`, `.ini`, `.sav`, `.vert`, `.frag`
     - actors: `.bin`, `.col`
     - behaviors: `.bhv`
     - textures: `.tex`, `.png`
diff --git a/src/pc/mods/mod_fs.cpp b/src/pc/mods/mod_fs.cpp
index 5dcd7fb8b..b1dc5a7a5 100644
--- a/src/pc/mods/mod_fs.cpp
+++ b/src/pc/mods/mod_fs.cpp
@@ -26,12 +26,12 @@ static std::vector<struct ModFs *> sModFsList = {};
 #define MOD_FS_FILE_IS_PUBLIC_DEFAULT   false
 
 static const char *MOD_FS_FILE_ALLOWED_EXTENSIONS[] = {
-    ".txt", ".json", ".ini", ".sav",    // text
-    ".bin", ".col",                     // actors
-    ".bhv",                             // behaviors
-    ".tex", ".png",                     // textures
-    ".lvl",                             // levels
-    ".m64", ".aiff", ".mp3", ".ogg",    // audio
+    ".txt", ".json", ".ini", ".sav", ".vert", ".frag"    // text
+    ".bin", ".col",                                      // actors
+    ".bhv",                                              // behaviors
+    ".tex", ".png",                                      // textures
+    ".lvl",                                              // levels
+    ".m64", ".aiff", ".mp3", ".ogg",                     // audio
     NULL
 };