diff --git a/src/corelib/global/qcompilerdetection.h b/src/corelib/global/qcompilerdetection.h
index cf4872281ba..73145addfca 100644
--- a/src/corelib/global/qcompilerdetection.h
+++ b/src/corelib/global/qcompilerdetection.h
@@ -903,9 +903,9 @@
 // Also disable <atomic>, since it's clearly not there
 #   undef Q_COMPILER_ATOMICS
 #  endif
-#  if defined(__cpp_lib_memory_resource)
-    && (defined(__MAC_OS_X_VERSION_MIN_REQUIRED)  && __MAC_OS_X_VERSION_MIN_REQUIRED  < 140000
-     || defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 170000)
+#  if defined(__cpp_lib_memory_resource) \
+    && ((defined(__MAC_OS_X_VERSION_MIN_REQUIRED)  && __MAC_OS_X_VERSION_MIN_REQUIRED  < 140000) \
+     || (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 170000))
 #   undef __cpp_lib_memory_resource // Only supported on macOS 14 and iOS 17
 #  endif
 # endif // defined(Q_CC_CLANG) && defined(Q_OS_DARWIN)