diff --git a/include/libopencm3/stm32/f4/rcc.h b/include/libopencm3/stm32/f4/rcc.h
index a206f70c..6e083547 100644
--- a/include/libopencm3/stm32/f4/rcc.h
+++ b/include/libopencm3/stm32/f4/rcc.h
@@ -1100,7 +1100,7 @@ void rcc_set_main_pll_hse(uint32_t pllm, uint32_t plln, uint32_t pllp,
 			  uint32_t pllq, uint32_t pllr);
 uint32_t rcc_system_clock_source(void);
 void rcc_clock_setup_pll(const struct rcc_clock_scale *clock);
-void __attribute__((deprecated)) rcc_clock_setup_hse_3v3(const struct rcc_clock_scale *clock);
+void __attribute__((deprecated("Use rcc_clock_setup_pll as direct replacement"))) rcc_clock_setup_hse_3v3(const struct rcc_clock_scale *clock);
 
 END_DECLS