diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 4442b10..8dc4257 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -79,7 +79,7 @@
 .KATI_READONLY := PLATFORM_SDK_VERSION
 
 # This is the sdk extension version of this tree.
-PLATFORM_SDK_EXTENSION_VERSION := 8
+PLATFORM_SDK_EXTENSION_VERSION := 7
 .KATI_READONLY := PLATFORM_SDK_EXTENSION_VERSION
 
 # This is the sdk extension version that PLATFORM_SDK_VERSION ships with.