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-rw-r--r--src/corelib/tools/qduplicatetracker_p.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/corelib/tools/qduplicatetracker_p.h b/src/corelib/tools/qduplicatetracker_p.h
index 950220184f..23465ecffe 100644
--- a/src/corelib/tools/qduplicatetracker_p.h
+++ b/src/corelib/tools/qduplicatetracker_p.h
@@ -16,7 +16,7 @@
#include <private/qglobal_p.h>
-#if __has_include(<memory_resource>)
+#ifdef __cpp_lib_memory_resource
# include <unordered_set>
# include <memory_resource>
# include <qhash.h> // for the hashing helpers