diff --git a/arch/arm/src/stm32/stm32_uid.c b/arch/arm/src/stm32/stm32_uid.c
index d38447726f..5456b2027d 100644
--- a/arch/arm/src/stm32/stm32_uid.c
+++ b/arch/arm/src/stm32/stm32_uid.c
@@ -37,9 +37,14 @@
  * Included Files
  ************************************************************************************/
 
+#include <nuttx/config.h>
+
 #include <chip/stm32_memorymap.h>
+
 #include "stm32_uid.h"
 
+#ifdef STM32_SYSMEM_UID /* Not defined for the STM32L */
+
 /************************************************************************************
  * Public Functions
  ************************************************************************************/
@@ -53,3 +58,6 @@ void stm32_get_uniqueid(uint8_t uniqueid[12])
       uniqueid[i] = *((uint8_t*)(STM32_SYSMEM_UID)+i);
     }
 }
+
+#endif /* STM32_SYSMEM_UID */
+