diff --git a/src/3rdparty/cpp-btree/btree.h b/src/3rdparty/cpp-btree/btree.h
index fc2ae9c9e3..97321768f7 100644
--- a/src/3rdparty/cpp-btree/btree.h
+++ b/src/3rdparty/cpp-btree/btree.h
@@ -726,7 +726,9 @@ class btree_node {
 
 #ifndef _MSC_VER
 #pragma GCC diagnostic push
+#if (__GNUC__ >= 9)
 #pragma GCC diagnostic ignored "-Wdeprecated-copy"
+#endif
 #endif /* _MSC_VER */
 
 template <typename Node, typename Reference, typename Pointer>