diff --git a/src/mem.c b/src/mem.c
index 787c0f04..d4a15797 100644
--- a/src/mem.c
+++ b/src/mem.c
@@ -340,7 +340,7 @@ static void* _tf_uv_calloc(size_t nmemb, size_t size)
 		count = tf_util_backtrace(buffer, sizeof(buffer) / sizeof(*buffer));
 		overhead += sizeof(tf_mem_node_t) + sizeof(void*) * count;
 	}
-	void* ptr = calloc(1, nmemb * rounded_up_size + overhead);
+	void* ptr = calloc(1, rounded_up_size + overhead);
 	if (ptr)
 	{
 		__atomic_add_fetch(&s_uv_malloc_size, total_size, __ATOMIC_RELAXED);