diff --git a/src/api/api_context.cpp b/src/api/api_context.cpp
index a16341955..6d9af74a0 100644
--- a/src/api/api_context.cpp
+++ b/src/api/api_context.cpp
@@ -153,7 +153,7 @@ namespace api {
         flush_objects();
         for (auto& kv : m_allocated_objects) {
             api::object* val = kv.m_value;
-            DEBUG_CODE(warning_msg("Uncollected memory: %d: %s", kv.m_key, typeid(*val).name()););
+            DEBUG_CODE(if (!m_concurrent_dec_ref) warning_msg("Uncollected memory: %d: %s", kv.m_key, typeid(*val).name()););
             dealloc(val);
         }
         if (m_params.owns_manager())