diff --git a/src/engine/buffers/vector/HostVector.hpp b/src/engine/buffers/vector/HostVector.hpp
index 39db17f..e5f1ce8 100644
--- a/src/engine/buffers/vector/HostVector.hpp
+++ b/src/engine/buffers/vector/HostVector.hpp
@@ -65,6 +65,9 @@ namespace fgl::engine
 			assert(
 				start_idx < this->m_count && "BufferSuballocationVector::flushRange start_idx index out of bounds" );
 			assert( end_idx <= this->m_count && "BufferSuballocationVector::flushRange end_idx index out of bounds" );
+			assert(
+				end_idx - start_idx > 0
+				&& "BufferSuballocationVector::flushRange: end_idx - start_idx must be higher then 0" );
 			assert(
 				start_idx < end_idx
 				&& "BufferSuballocationVector::flushRange start_idx index must be less than end_idx index" );