diff --git a/package/kf5/kf5-modemmanager-qt/kf5-modemmanager-qt.mk b/package/kf5/kf5-modemmanager-qt/kf5-modemmanager-qt.mk
index 9bbeeaa760..20fbc102c6 100644
--- a/package/kf5/kf5-modemmanager-qt/kf5-modemmanager-qt.mk
+++ b/package/kf5/kf5-modemmanager-qt/kf5-modemmanager-qt.mk
@@ -13,4 +13,9 @@ KF5_MODEMMANAGER_QT_LICENSE_FILE = COPYING.LIB
 KF5_MODEMMANAGER_QT_DEPENDENCIES = kf5-extra-cmake-modules modem-manager qt5base
 KF5_MODEMMANAGER_QT_INSTALL_STAGING = YES
 
+# Uses __atomic_fetch_add_4
+ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
+KF5_MODEMMANAGER_QT_CONF_OPTS += -DCMAKE_CXX_FLAGS="$(TARGET_CXXFLAGS) -latomic"
+endif
+
 $(eval $(cmake-package))