diff --git a/recipes/core/kernel/recipe.toml b/recipes/core/kernel/recipe.toml
index 479812ab49..cf59c2ef5e 100644
--- a/recipes/core/kernel/recipe.toml
+++ b/recipes/core/kernel/recipe.toml
@@ -7,7 +7,6 @@ path = "../../../local/sources/kernel"
 [build]
 template = "custom"
 script = """
-export RUSTC_BOOTSTRAP=1
 make -f ${COOKBOOK_SOURCE}/Makefile
 mkdir -pv "${COOKBOOK_STAGE}/usr/lib/boot"
 cp -v kernel "${COOKBOOK_STAGE}/usr/lib/boot"