diff --git a/include/libopencm3/stm32/common/usart_common_f124.h b/include/libopencm3/stm32/common/usart_common_f124.h
index 283503d2..bfe50cd0 100644
--- a/include/libopencm3/stm32/common/usart_common_f124.h
+++ b/include/libopencm3/stm32/common/usart_common_f124.h
@@ -95,6 +95,23 @@ specific memorymap.h header before including this header file.*/
 #define UART4_GTPR			USART_GTPR(UART4_BASE)
 #define UART5_GTPR			USART_GTPR(UART5_BASE)
 
+/** @defgroup usart_convenience_flags U(S)ART convenience Flags
+ * @ingroup STM32F_usart_defines
+ * We define the "common" lower flag bits using a standard name,
+ * allowing them to be used regardless of which usart peripheral
+ * version you have.
+ * @{
+ */
+#define USART_FLAG_PE	USART_SR_PE
+#define USART_FLAG_FE	USART_SR_FE
+#define USART_FLAG_NF	USART_SR_NF
+#define USART_FLAG_ORE	USART_SR_ORE
+#define USART_FLAG_IDLE	USART_SR_IDLE
+#define USART_FLAG_RXNE	USART_SR_RXNE
+#define USART_FLAG_TC	USART_SR_TC
+#define USART_FLAG_TXE	USART_SR_TXE
+/**@}*/
+
 /* --- USART_SR values ----------------------------------------------------- */
 /****************************************************************************/
 /** @defgroup usart_sr_flags USART Status register Flags
diff --git a/include/libopencm3/stm32/common/usart_common_v2.h b/include/libopencm3/stm32/common/usart_common_v2.h
index 2ae3ee35..4b5bee60 100644
--- a/include/libopencm3/stm32/common/usart_common_v2.h
+++ b/include/libopencm3/stm32/common/usart_common_v2.h
@@ -196,6 +196,24 @@
 
 /**@}*/
 
+/** @defgroup usart_convenience_flags U(S)ART convenience Flags
+ * @ingroup STM32F_usart_defines
+ * We define the "common" lower flag bits using a standard name,
+ * allowing them to be used regardless of which usart peripheral
+ * version you have.
+ * @{
+ */
+#define USART_FLAG_PE	USART_ISR_PE
+#define USART_FLAG_FE	USART_ISR_FE
+#define USART_FLAG_NF	USART_ISR_NF
+#define USART_FLAG_ORE	USART_ISR_ORE
+#define USART_FLAG_IDLE	USART_ISR_IDLE
+#define USART_FLAG_RXNE	USART_ISR_RXNE
+#define USART_FLAG_TC	USART_ISR_TC
+#define USART_FLAG_TXE	USART_ISR_TXE
+/**@}*/
+
+
 /*****************************************************************************/
 /* Register values                                                           */
 /*****************************************************************************/
diff --git a/include/libopencm3/stm32/f3/usart.h b/include/libopencm3/stm32/f3/usart.h
index 4d3766f7..ce4af10f 100644
--- a/include/libopencm3/stm32/f3/usart.h
+++ b/include/libopencm3/stm32/f3/usart.h
@@ -80,47 +80,6 @@
 
 
 
-
-/* --- USART_SR values ----------------------------------------------------- */
-/****************************************************************************/
-/** @defgroup usart_sr_flags USART Status register Flags
-@ingroup STM32F_usart_defines
-
-@{*/
-
-/** CTS: CTS flag */
-/** @note: undefined on UART4 and UART5 */
-#define USART_SR_CTS            USART_ISR_CTS
-
-/** LBD: LIN break detection flag */
-#define USART_SR_LBD            USART_ISR_LBDF
-
-/** TXE: Transmit data buffer empty */
-#define USART_SR_TXE            USART_ISR_TXE
-
-/** TC: Transmission complete */
-#define USART_SR_TC             USART_ISR_TC
-
-/** RXNE: Read data register not empty */
-#define USART_SR_RXNE           USART_ISR_RXNE
-
-/** IDLE: Idle line detected */
-#define USART_SR_IDLE           USART_ISR_IDLE
-
-/** ORE: Overrun error */
-#define USART_SR_ORE            USART_ISR_ORE
-
-/** NE: Noise error flag */
-#define USART_SR_NE             USART_ISR_NF
-
-/** FE: Framing error */
-#define USART_SR_FE             USART_ISR_FE
-
-/** PE: Parity error */
-#define USART_SR_PE             USART_ISR_PE
-/**@}*/
-
-
 /* --- USART_RDR values --------------------------------------------------- */
 
 /* RDR[8:0]: Receive data value */