diff --git a/luna/src/Heap.cpp b/luna/src/Heap.cpp
index 12507913..81c6c45f 100644
--- a/luna/src/Heap.cpp
+++ b/luna/src/Heap.cpp
@@ -99,7 +99,7 @@ static Option<HeapBlock*> split(HeapBlock* block, usize size)
     const usize old_size =
         block->full_size; // Save the old value of this variable since we are going to use it after modifying it
 
-    if (available < (size + sizeof(HeapBlock)))
+    if (available <= (size + sizeof(HeapBlock)))
         return {}; // This block hasn't got enough free space to hold the requested size.
 
     const usize offset = get_fair_offset_to_split_at(block, size + sizeof(HeapBlock));