diff --git a/src/segment.c b/src/segment.c
index bdf97019..4c2fa32e 100644
--- a/src/segment.c
+++ b/src/segment.c
@@ -579,7 +579,8 @@ static mi_segment_t* mi_segment_init(mi_segment_t* segment, size_t required, mi_
   mi_assert_internal(segment_size >= required);
 
   // Initialize parameters
-  const bool eager_delayed = (page_kind <= MI_PAGE_MEDIUM && tld->count < (size_t)mi_option_get(mi_option_eager_commit_delay));
+  const bool eager_delayed = (page_kind <= MI_PAGE_MEDIUM && !_mi_is_main_thread() &&
+                              tld->count < (size_t)mi_option_get(mi_option_eager_commit_delay));
   const bool eager  = !eager_delayed && mi_option_is_enabled(mi_option_eager_commit);
   bool commit = eager; // || (page_kind >= MI_PAGE_LARGE);
   bool pages_still_good = false;