diff --git a/src/mem/alloc.h b/src/mem/alloc.h
index c721948..e39724d 100644
--- a/src/mem/alloc.h
+++ b/src/mem/alloc.h
@@ -1056,7 +1056,7 @@ namespace snmalloc
     }
 
     template<ZeroMem zero_mem, AllowReserve allow_reserve>
-    inline void* small_alloc(size_t size)
+    SNMALLOC_FAST_PATH void* small_alloc(size_t size)
     {
       MEASURE_TIME_MARKERS(
         small_alloc,
diff --git a/src/mem/threadalloc.h b/src/mem/threadalloc.h
index 56383e6..d23d4e7 100644
--- a/src/mem/threadalloc.h
+++ b/src/mem/threadalloc.h
@@ -181,7 +181,7 @@ namespace snmalloc
    * Entry point the allows libc to call into the allocator for per-thread
    * cleanup.
    */
-  extern "C" void _malloc_thread_cleanup(void)
+  extern "C" void _malloc_thread_cleanup()
   {
     ThreadAllocLibcCleanup::inner_release();
   }