diff --git a/cpu/stm32_common/stm32_mem_lengths.mk b/cpu/stm32_common/stm32_mem_lengths.mk
index 3c3186f0c17351c8ba2ce8bc9064c5c93477771c..68f7268cdd6982723a143e06d161a3d4af102ef1 100644
--- a/cpu/stm32_common/stm32_mem_lengths.mk
+++ b/cpu/stm32_common/stm32_mem_lengths.mk
@@ -235,6 +235,7 @@ else ifeq ($(STM32_TYPE), L)
       RAM_LEN = 64K
     else ifeq ($(STM32_MODEL2), 7)
       RAM_LEN = 96K
+      RAM2_LEN = 32K
     else ifeq ($(STM32_MODEL2), 5)
       RAM_LEN = 160K
     else ifeq ($(STM32_MODEL2), 9)