diff --git a/cpu/stm32/stm32_mem_lengths.mk b/cpu/stm32/stm32_mem_lengths.mk
index 48c0ca086d..0d70ed27d6 100644
--- a/cpu/stm32/stm32_mem_lengths.mk
+++ b/cpu/stm32/stm32_mem_lengths.mk
@@ -180,6 +180,8 @@ else ifeq ($(STM32_TYPE), G)
   ifeq ($(STM32_FAMILY), 0)
     ifneq (, $(filter $(STM32_MODEL2), 7))
       RAM_LEN = 36K
+    else ifneq (, $(filter $(STM32_MODEL2), 3))
+      RAM_LEN = 8K
     endif
   endif
   ifeq ($(STM32_FAMILY), 4)