diff --git a/include/libopencm3/stm32/common/usart_common_all.h b/include/libopencm3/stm32/common/usart_common_all.h
index a8e0272e..a39d6833 100644
--- a/include/libopencm3/stm32/common/usart_common_all.h
+++ b/include/libopencm3/stm32/common/usart_common_all.h
@@ -34,19 +34,6 @@ specific memorymap.h header before including this header file.*/
 #ifndef LIBOPENCM3_USART_COMMON_ALL_H
 #define LIBOPENCM3_USART_COMMON_ALL_H
 
-/* --- Convenience macros -------------------------------------------------- */
-
-/****************************************************************************/
-/** @defgroup usart_reg_base USART register base addresses
-@ingroup STM32F_usart_defines
-
-@{*/
-#define USART1				USART1_BASE
-#define USART2				USART2_BASE
-#define USART3				USART3_BASE
-/**@}*/
-#define UART4				UART4_BASE
-#define UART5				UART5_BASE
 
 /* --- Convenience defines ------------------------------------------------- */
 
diff --git a/include/libopencm3/stm32/common/usart_common_f124.h b/include/libopencm3/stm32/common/usart_common_f124.h
index bfe50cd0..41ce2999 100644
--- a/include/libopencm3/stm32/common/usart_common_f124.h
+++ b/include/libopencm3/stm32/common/usart_common_f124.h
@@ -37,6 +37,19 @@ specific memorymap.h header before including this header file.*/
 
 #include <libopencm3/stm32/common/usart_common_all.h>
 
+
+/** @defgroup usart_reg_base USART register base addresses
+ * @ingroup STM32F_usart_defines
+ * Holds all the U(S)ART peripherals supported.
+ * @{
+ */
+#define USART1				USART1_BASE
+#define USART2				USART2_BASE
+#define USART3				USART3_BASE
+#define UART4				UART4_BASE
+#define UART5				UART5_BASE
+/**@}*/
+
 /* --- USART registers ----------------------------------------------------- */
 
 /* Status register (USARTx_SR) */
diff --git a/include/libopencm3/stm32/f3/usart.h b/include/libopencm3/stm32/f3/usart.h
index f2de8f0f..34cc9933 100644
--- a/include/libopencm3/stm32/f3/usart.h
+++ b/include/libopencm3/stm32/f3/usart.h
@@ -35,6 +35,17 @@
 #include <libopencm3/stm32/common/usart_common_v2.h>
 
 
+/** @defgroup usart_reg_base USART register base addresses
+ * @ingroup STM32F_usart_defines
+ * Holds all the U(S)ART peripherals supported.
+ * @{
+ */
+#define USART1				USART1_BASE
+#define USART2				USART2_BASE
+#define USART3				USART3_BASE
+#define UART4				UART4_BASE
+#define UART5				UART5_BASE
+/**@}*/
 
 /* --- USART_CR2 values ---------------------------------------------------- */