diff --git a/cpu/stm32_common/Makefile.include b/cpu/stm32_common/Makefile.include
index 1bb0844296..ffa2790444 100644
--- a/cpu/stm32_common/Makefile.include
+++ b/cpu/stm32_common/Makefile.include
@@ -23,8 +23,16 @@ export INCLUDES += -I$(RIOTCPU)/stm32_common/include
 
 include $(RIOTCPU)/stm32_common/stm32_mem_lengths.mk
 
+# Get CPU_LINE_ variable
+-include $(RIOTCPU)/$(CPU)/stm32_line.mk
+CPU_LINE ?= $(shell echo $(CPU_MODEL) | cut -c -9 | tr 'a-z-' 'A-Z_')xx
+
+# Set CFLAGS
+export CFLAGS += -D$(CPU_LINE) -DCPU_LINE_$(CPU_LINE)
+
 info-stm32:
 	@$(COLOR_ECHO) "CPU: $(CPU_MODEL)"
+	@$(COLOR_ECHO) "\tLine: $(CPU_LINE)"
 	@$(COLOR_ECHO) "\tPin count:\t$(STM32_PINCOUNT)"
 	@$(COLOR_ECHO) "\tROM size:\t$(ROM_LEN)"
 	@$(COLOR_ECHO) "\tRAM size:\t$(RAM_LEN)"