diff --git a/include/libopencm3/stm32/f4/rcc.h b/include/libopencm3/stm32/f4/rcc.h
index 4f22f226..c6bf5ad8 100644
--- a/include/libopencm3/stm32/f4/rcc.h
+++ b/include/libopencm3/stm32/f4/rcc.h
@@ -945,6 +945,8 @@ void rcc_css_enable(void);
 void rcc_css_disable(void);
 void rcc_osc_bypass_enable(enum rcc_osc osc);
 void rcc_osc_bypass_disable(enum rcc_osc osc);
+void rcc_pllsai_config(uint16_t n, uint16_t p, uint16_t q, uint16_t r);
+void rcc_pllsai_postscalers(uint8_t q, uint8_t r);
 void rcc_set_sysclk_source(uint32_t clk);
 void rcc_set_pll_source(uint32_t pllsrc);
 void rcc_set_ppre2(uint32_t ppre2);
diff --git a/lib/stm32/f4/rcc.c b/lib/stm32/f4/rcc.c
index 0b741a94..d4329ab7 100644
--- a/lib/stm32/f4/rcc.c
+++ b/lib/stm32/f4/rcc.c
@@ -591,7 +591,7 @@ void rcc_pllsai_config(uint16_t n, uint16_t p, uint16_t q, uint16_t r)
  */
 void rcc_pllsai_postscalers(uint8_t q, uint8_t r)
 {
-	uint32 reg32 = RCC_DCKCFGR;
+	uint32_t reg32 = RCC_DCKCFGR;
 	reg32 &= ((RCC_DCKCFGR_PLLSAIDIVR_MASK << RCC_DCKCFGR_PLLSAIDIVR_SHIFT)
 		| (RCC_DCKCFGR_PLLSAIDIVQ_MASK << RCC_DCKCFGR_PLLSAIDIVQ_SHIFT));
 	RCC_DCKCFGR = reg32 | ((q << RCC_DCKCFGR_PLLSAIDIVQ_SHIFT) |