diff --git a/include/libopencm3/stm32/l4/rcc.h b/include/libopencm3/stm32/l4/rcc.h
index 6ab67bb6..a3fe50ca 100644
--- a/include/libopencm3/stm32/l4/rcc.h
+++ b/include/libopencm3/stm32/l4/rcc.h
@@ -45,7 +45,7 @@
 #define RCC_CR				MMIO32(RCC_BASE + 0x00)
 #define RCC_ICSCR			MMIO32(RCC_BASE + 0x04)
 #define RCC_CFGR			MMIO32(RCC_BASE + 0x08)
-#define RCC_PLL_CFGR			MMIO32(RCC_BASE + 0x0c)
+#define RCC_PLLCFGR			MMIO32(RCC_BASE + 0x0c)
 #define RCC_PLLSAI1_CFGR		MMIO32(RCC_BASE + 0x10)
 #define RCC_PLLSAI2_CFGR		MMIO32(RCC_BASE + 0x14)
 #define RCC_CIER			MMIO32(RCC_BASE + 0x18)