diff --git a/include/simd_support.hpp b/include/simd_support.hpp
index 601a892..e5a6f3b 100644
--- a/include/simd_support.hpp
+++ b/include/simd_support.hpp
@@ -124,7 +124,8 @@ void deallocate_aligned(T* ptr)
     free(ptr);
 }
 
-#elif defined(__linux__)
+#elif defined(__linux__) || defined(__EMSCRIPTEN__)
+
 
 template <class T>
 T* allocate_aligned(size_t size)
diff --git a/include/thread_locks.hpp b/include/thread_locks.hpp
index 68087ac..7f39e85 100644
--- a/include/thread_locks.hpp
+++ b/include/thread_locks.hpp
@@ -11,7 +11,7 @@
 
 HISSTOOLS_LIBRARY_NAMESPACE_START()
 
-#ifdef __linux__
+#if defined(__linux__) || defined(__EMSCRIPTEN__)
 
 // Linux specific definitions