diff --git a/src/mainboard/google/cyan/Kconfig b/src/mainboard/google/cyan/Kconfig
index 917a66e88b..1d9b7b791b 100644
--- a/src/mainboard/google/cyan/Kconfig
+++ b/src/mainboard/google/cyan/Kconfig
@@ -73,7 +73,7 @@ config MAINBOARD_VENDOR
 
 config DEVICETREE
 	string
-	default "variants/${CONFIG_VARIANT_DIR}/devicetree.cb"
+	default "variants/$(CONFIG_VARIANT_DIR)/devicetree.cb"
 
 config VGA_BIOS_FILE
 	string
diff --git a/src/mainboard/google/glados/Kconfig b/src/mainboard/google/glados/Kconfig
index c5a80d4ae1..80cc0f3e81 100644
--- a/src/mainboard/google/glados/Kconfig
+++ b/src/mainboard/google/glados/Kconfig
@@ -60,7 +60,7 @@ config VARIANT_DIR
 
 config DEVICETREE
 	string
-	default "variants/${CONFIG_VARIANT_DIR}/devicetree.cb"
+	default "variants/$(CONFIG_VARIANT_DIR)/devicetree.cb"
 
 config MAX_CPUS
 	int
diff --git a/src/mainboard/google/kahlee/Kconfig b/src/mainboard/google/kahlee/Kconfig
index 97d15f57ef..13ad0b97ff 100644
--- a/src/mainboard/google/kahlee/Kconfig
+++ b/src/mainboard/google/kahlee/Kconfig
@@ -72,7 +72,7 @@ config MAINBOARD_PART_NUMBER
 
 config DEVICETREE
 	string
-	default "variants/${CONFIG_VARIANT_DIR}/devicetree.cb"
+	default "variants/$(CONFIG_VARIANT_DIR)/devicetree.cb"
 
 config MAINBOARD_FAMILY
 	string
diff --git a/src/mainboard/google/sarien/Kconfig b/src/mainboard/google/sarien/Kconfig
index c9e4c0bb30..c0bd1d880b 100644
--- a/src/mainboard/google/sarien/Kconfig
+++ b/src/mainboard/google/sarien/Kconfig
@@ -88,7 +88,7 @@ config VARIANT_DIR
 
 config DEVICETREE
 	string
-	default "variants/${CONFIG_VARIANT_DIR}/devicetree.cb"
+	default "variants/$(CONFIG_VARIANT_DIR)/devicetree.cb"
 
 config VBOOT
 	select HAS_RECOVERY_MRC_CACHE