diff --git a/src/ec/purism/librem/acpi/ec.asl b/src/ec/purism/librem/acpi/ec.asl
index e95f126..ff325aa 100644
--- a/src/ec/purism/librem/acpi/ec.asl
+++ b/src/ec/purism/librem/acpi/ec.asl
@@ -218,11 +218,11 @@
 		 * when the system is charging.
 		 */
 		If (TURB) {
-			Store (Zero, PPCM)
+			Store (PPCM_TURBO, PPCM)
 			PPCN ()
 			Store (One, EDTB)
 		} Else {
-			Store (One, PPCM)
+			Store (PPCM_NOTURBO, PPCM)
 			PPCN ()
 			Store (Zero, EDTB)
 		}
diff --git a/src/mainboard/purism/librem13v1/acpi/ec.asl b/src/mainboard/purism/librem13v1/acpi/ec.asl
index cf8b9a9..b2fa5b9 100644
--- a/src/mainboard/purism/librem13v1/acpi/ec.asl
+++ b/src/mainboard/purism/librem13v1/acpi/ec.asl
@@ -14,5 +14,7 @@
  */
 
 #define EC_SCI_GPI 10
+#define PPCM_TURBO Zero
+#define PPCM_NOTURBO One
 
 #include <ec/purism/librem/acpi/ec.asl>
diff --git a/src/mainboard/purism/librem_skl/acpi/ec.asl b/src/mainboard/purism/librem_skl/acpi/ec.asl
index 4215213..c667b6c 100644
--- a/src/mainboard/purism/librem_skl/acpi/ec.asl
+++ b/src/mainboard/purism/librem_skl/acpi/ec.asl
@@ -14,5 +14,7 @@
  */
 
 #define EC_SCI_GPI 0x50
+#define PPCM_TURBO One
+#define PPCM_NOTURBO 0x02
 
 #include <ec/purism/librem/acpi/ec.asl>