diff --git a/build/args/all.gn b/build/args/all.gn
index 1e31472914a..b0e8dda791c 100644
--- a/build/args/all.gn
+++ b/build/args/all.gn
@@ -34,4 +34,7 @@ is_cfi = false
 # Make application name configurable at runtime for cookie crypto
 allow_runtime_configurable_key_storage = true
 
+# CET shadow stack is incompatible with v8, until v8 is CET compliant
+# enabling this flag causes main process crashes where CET is enabled
+# Ref: https://source.chromium.org/chromium/chromium/src/+/45fba672185aae233e75d6ddc81ea1e0b30db050:v8/BUILD.gn;l=357
 enable_cet_shadow_stack = false