diff --git a/libuavcan_drivers/stm32/driver/include/uavcan_stm32/clock.hpp b/libuavcan_drivers/stm32/driver/include/uavcan_stm32/clock.hpp
index eeceaf3d77..1f422f02dd 100644
--- a/libuavcan_drivers/stm32/driver/include/uavcan_stm32/clock.hpp
+++ b/libuavcan_drivers/stm32/driver/include/uavcan_stm32/clock.hpp
@@ -105,11 +105,12 @@ class SystemClock : public uavcan::ISystemClock, uavcan::Noncopyable
 {
     SystemClock() { }
 
-    virtual uavcan::MonotonicTime getMonotonic()     const { return clock::getMonotonic(); }
-    virtual uavcan::UtcTime getUtc()                 const { return clock::getUtc(); }
     virtual void adjustUtc(uavcan::UtcDuration adjustment) { clock::adjustUtc(adjustment); }
 
 public:
+    virtual uavcan::MonotonicTime getMonotonic() const { return clock::getMonotonic(); }
+    virtual uavcan::UtcTime getUtc()             const { return clock::getUtc(); }
+
     /**
      * Calls clock::init() as needed.
      * This function is thread safe.