diff --git a/targets/TARGET_STM/TARGET_STM32F3/TARGET_DISCO_F303VC/PinNames.h b/targets/TARGET_STM/TARGET_STM32F3/TARGET_DISCO_F303VC/PinNames.h
index 5d0f17ba20d..4edd4277739 100644
--- a/targets/TARGET_STM/TARGET_STM32F3/TARGET_DISCO_F303VC/PinNames.h
+++ b/targets/TARGET_STM/TARGET_STM32F3/TARGET_DISCO_F303VC/PinNames.h
@@ -185,6 +185,7 @@ typedef enum {
     ADC_VREF2   = 0xF2,
     ADC_VREF3   = 0xF3,
     ADC_VREF4   = 0xF4,
+    ADC_VREF    = ADC_VREF1,
     ADC_VBAT    = 0xF5,
     ADC_VOPAMP1 = 0xF6,
     ADC_VOPAMP2 = 0xF7,
diff --git a/targets/TARGET_STM/TARGET_STM32F3/TARGET_DISCO_F334C8/PinNames.h b/targets/TARGET_STM/TARGET_STM32F3/TARGET_DISCO_F334C8/PinNames.h
index 9d5a02df944..b81b799215f 100644
--- a/targets/TARGET_STM/TARGET_STM32F3/TARGET_DISCO_F334C8/PinNames.h
+++ b/targets/TARGET_STM/TARGET_STM32F3/TARGET_DISCO_F334C8/PinNames.h
@@ -122,6 +122,7 @@ typedef enum {
     ADC_TEMP    = 0xF0,
     ADC_VREF1   = 0xF1,
     ADC_VREF2   = 0xF2,
+    ADC_VREF    = ADC_VREF1,
     ADC_VBAT    = 0xF3,
     ADC_VOPAMP2 = 0xF4,
 
diff --git a/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303K8/PinNames.h b/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303K8/PinNames.h
index 72ce0bb2b32..9cd4e698146 100644
--- a/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303K8/PinNames.h
+++ b/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303K8/PinNames.h
@@ -109,6 +109,7 @@ typedef enum {
     ADC_TEMP    = 0xF0,
     ADC_VREF1   = 0xF1,
     ADC_VREF2   = 0xF2,
+    ADC_VREF    = ADC_VREF1,
     ADC_VBAT    = 0xF3,
     ADC_VOPAMP2 = 0xF4,
 
diff --git a/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303RE/PinNames.h b/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303RE/PinNames.h
index f1d5ec21a5c..f850b940fbc 100644
--- a/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303RE/PinNames.h
+++ b/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303RE/PinNames.h
@@ -139,6 +139,7 @@ typedef enum {
     ADC_VREF2   = 0xF2,
     ADC_VREF3   = 0xF3,
     ADC_VREF4   = 0xF4,
+    ADC_VREF    = ADC_VREF1,
     ADC_VBAT    = 0xF5,
     ADC_VOPAMP1 = 0xF6,
     ADC_VOPAMP2 = 0xF7,
diff --git a/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303ZE/PinNames.h b/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303ZE/PinNames.h
index da862676511..994b4c6ebdf 100644
--- a/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303ZE/PinNames.h
+++ b/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303ZE/PinNames.h
@@ -206,6 +206,7 @@ typedef enum {
     ADC_VREF2   = 0xF2,
     ADC_VREF3   = 0xF3,
     ADC_VREF4   = 0xF4,
+    ADC_VREF    = ADC_VREF1,
     ADC_VBAT    = 0xF5,
     ADC_VOPAMP1 = 0xF6,
     ADC_VOPAMP2 = 0xF7,
diff --git a/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F334R8/PinNames.h b/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F334R8/PinNames.h
index 16d20e775f3..9f59bcf8604 100644
--- a/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F334R8/PinNames.h
+++ b/targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F334R8/PinNames.h
@@ -137,6 +137,7 @@ typedef enum {
     ADC_TEMP    = 0xF0,
     ADC_VREF1   = 0xF1,
     ADC_VREF2   = 0xF2,
+    ADC_VREF    = ADC_VREF1,
     ADC_VBAT    = 0xF3,
     ADC_VOPAMP2 = 0xF4,