diff --git a/sof-rt5682/platform.conf b/sof-rt5682/platform.conf
index 1aa3e1d..627a249 100644
--- a/sof-rt5682/platform.conf
+++ b/sof-rt5682/platform.conf
@@ -3,7 +3,7 @@
 If.cml {
 	Condition {
 		Type String
-		String1 "${sys:class/dmi/id/product_family}"
+		String1 "$${sys:class/dmi/id/product_family}"
 		String2 "Google_Hatch"
 	}
 	True {
@@ -16,7 +16,7 @@ If.cml {
 If.tgl {
 	Condition {
 		Type String
-		String1 "${sys:class/dmi/id/product_family}"
+		String1 "$${sys:class/dmi/id/product_family}"
 		String2 "Google_Volteer"
 	}
 	True {
@@ -31,7 +31,7 @@ If.jsl {
 	Condition {
 		Type RegexMatch
 		Regex "^(beadrix|beetley|blipper|bookem|boten|botenflex|boxy|bugzzy|common|cret|cret360|dexi|dibbi|drawcia|drawlat|drawman|drawper|galith|galith360|gallop|galnat|galnat360|galtic|galtic360|gesture|kracko|kracko360|landia|landrid|lantis|madoo|magister|maglet|maglia|maglith|magma|magneto|magolor|magpie|metaknight|oscino|pasara|peezer|pirette|pirika|sasuke|sasukette|shotzo|storo|taranza|waddledee|waddledoo)$"
-		String "${sys:class/dmi/id/product_name}"
+		String "$${sys:class/dmi/id/product_name}"
 	}
 	True {
 		Define.jsl y
@@ -44,7 +44,7 @@ If.adl {
 	Condition {
 		Type RegexMatch
 		Regex "^Google_(Brya|Brask|Nissa)$"
-		String "${sys:class/dmi/id/product_family}"
+		String "$${sys:class/dmi/id/product_family}"
 	}
 	True {
 		Define.adl y