diff --git a/cpu/sam0_common/Makefile.features b/cpu/sam0_common/Makefile.features
index 1ce1c11662..7c7df67cfb 100644
--- a/cpu/sam0_common/Makefile.features
+++ b/cpu/sam0_common/Makefile.features
@@ -1,3 +1,5 @@
+CPU_FAM := $(shell echo $(CPU_MODEL) | cut -c -6)
+
 FEATURES_PROVIDED += periph_cpuid
 FEATURES_PROVIDED += periph_dma
 FEATURES_PROVIDED += periph_flashpage
diff --git a/cpu/samd21/Makefile.features b/cpu/samd21/Makefile.features
index 0f283eb987..ec15278a12 100644
--- a/cpu/samd21/Makefile.features
+++ b/cpu/samd21/Makefile.features
@@ -1,5 +1,4 @@
 CPU_CORE = cortex-m0plus
-CPU_FAM  = samd21
 
 FEATURES_PROVIDED += puf_sram
 
diff --git a/cpu/samd5x/Makefile.features b/cpu/samd5x/Makefile.features
index d2bcf5a8d9..5ef1caaa40 100644
--- a/cpu/samd5x/Makefile.features
+++ b/cpu/samd5x/Makefile.features
@@ -1,5 +1,4 @@
 CPU_CORE = cortex-m4f
-CPU_FAM  = samd5x
 
 FEATURES_PROVIDED += periph_hwrng
 FEATURES_PROVIDED += backup_ram
diff --git a/cpu/saml1x/Makefile.features b/cpu/saml1x/Makefile.features
index 70afaf4b9b..9702eab806 100644
--- a/cpu/saml1x/Makefile.features
+++ b/cpu/saml1x/Makefile.features
@@ -1,13 +1,5 @@
 CPU_CORE = cortex-m23
 
-ifneq (,$(filter saml10%,$(CPU_MODEL)))
-  CPU_FAM = saml10
-else ifneq (,$(filter saml11%,$(CPU_MODEL)))
-  CPU_FAM = saml11
-else
-  $(error Unknown saml1x CPU Model: $(CPU_MODEL))
-endif
-
 # TODO: The cortex-m23 MPU is not ported
 # FEATURES_PROVIDED += cortexm_mpu
 
diff --git a/cpu/saml21/Makefile.features b/cpu/saml21/Makefile.features
index 3e4b0d6fa8..2bb3defaa4 100644
--- a/cpu/saml21/Makefile.features
+++ b/cpu/saml21/Makefile.features
@@ -1,5 +1,4 @@
 CPU_CORE = cortex-m0plus
-CPU_FAM  = saml21
 
 # The SAMR30 line of MCUs does not contain a TRNG
 CPU_MODELS_WITHOUT_HWRNG += samr30%