diff --git a/cpu/stm32/stm32_info.mk b/cpu/stm32/stm32_info.mk
index 62617a0dc4..92e15f0a55 100644
--- a/cpu/stm32/stm32_info.mk
+++ b/cpu/stm32/stm32_info.mk
@@ -22,7 +22,7 @@ else ifneq (,$(filter $(CPU_FAM),g4 wb))
   CPU_CORE = cortex-m4
 else ifeq (f7,$(CPU_FAM))
   CPU_CORE = cortex-m7
-else ifneq (,$(CPU_FAM),g0 l0)
+else ifneq (,$(filter $(CPU_FAM),g0 l0))
   CPU_CORE = cortex-m0plus
 else
   $(error Not supported CPU family: 'stm32$(CPU_FAM)')