diff --git a/dlmalloc/src/malloc.c b/dlmalloc/src/malloc.c
index 03da739e1..4ad6a22f0 100644
--- a/dlmalloc/src/malloc.c
+++ b/dlmalloc/src/malloc.c
@@ -4562,7 +4562,7 @@ static void* tmalloc_small(mstate m, size_t nb) {
 
 #if __wasilibc_unmodified_upstream // Forward declaration of try_init_allocator.
 #else
-static void try_init_allocator(void);
+__attribute__((constructor(0))) static void try_init_allocator(void);
 #endif
 
 void* dlmalloc(size_t bytes) {
@@ -4593,13 +4593,6 @@ void* dlmalloc(size_t bytes) {
   ensure_initialization(); /* initialize in sys_alloc if not using locks */
 #endif
 
-#if __wasilibc_unmodified_upstream // Try to initialize the allocator.
-#else
-  if (!is_initialized(gm)) {
-    try_init_allocator();
-  }
-#endif
-
   if (!PREACTION(gm)) {
     void* mem;
     size_t nb;