diff --git a/lineage_FP4.mk b/lineage_FP4.mk
index 37d98b9e55b6f89caf1c49c9790a56896f46dd41..184fbc8f5b0716b43d1cb9d406e2cca96ff5da7f 100644
--- a/lineage_FP4.mk
+++ b/lineage_FP4.mk
@@ -34,4 +34,9 @@ PRODUCT_BUILD_PROP_OVERRIDES += \
 
 PRODUCT_GMS_CLIENTID_BASE := android-alcatel
 
+# The below PLATFORM_SECURITY_PATCH_OVERRIDE variable has to be synced
+# with the microG device fingerprint for SagetyNet purposes and should
+# not be modified.
+# The value of this variable must be equal or older than the current
+# system one in android_build.
 PLATFORM_SECURITY_PATCH_OVERRIDE := 2021-12-05