diff --git a/demos/external/sources/mmutils/thread_pool.d b/demos/external/sources/mmutils/thread_pool.d
index 093cb6d..7139a97 100644
--- a/demos/external/sources/mmutils/thread_pool.d
+++ b/demos/external/sources/mmutils/thread_pool.d
@@ -1,4 +1,4 @@
-module mmutils.thread_pool;
+module mmutils.thread_pool;
 
 import std.algorithm : map;
 
@@ -9,7 +9,9 @@ version (WebAssembly)
 {
 	version = MM_NO_LOGS;
 	version = MM_USE_POSIX_THREADS;
-	struct FILE;
+	extern(C) struct FILE
+	{		
+	}
 }
 else 
 {
@@ -1825,4 +1827,4 @@ else
 // -fsanitize=address
 // rdmd -g -of=thread_pool src/mmutils/thread_pool.d && ./thread_pool
 // ldmd2 -release -inline -checkaction=C -g -of=thread_pool src/mmutils/thread_pool.d && ./thread_pool
-// ldmd2 -checkaction=C -g -of=thread_pool src/mmutils/thread_pool.d && ./thread_pool
\ No newline at end of file
+// ldmd2 -checkaction=C -g -of=thread_pool src/mmutils/thread_pool.d && ./thread_pool