diff --git a/meta-arm/meta-arm/classes/fvpboot.bbclass b/meta-arm/meta-arm/classes/fvpboot.bbclass
index 78dabd7..508deb2 100644
--- a/meta-arm/meta-arm/classes/fvpboot.bbclass
+++ b/meta-arm/meta-arm/classes/fvpboot.bbclass
@@ -24,7 +24,9 @@
 # Arbitrary extra arguments
 FVP_EXTRA_ARGS ?= ""
 # Bitbake variables to pass to the FVP environment
-FVP_ENV_PASSTHROUGH ?= ""
+FVP_ENV_PASSTHROUGH ?= "FASTSIM_DISABLE_TA"
+# Disable timing annotation by default
+FASTSIM_DISABLE_TA ?= "1"
 
 EXTRA_IMAGEDEPENDS += "${FVP_PROVIDER}"