diff --git a/common/environment/build-style/cargo.sh b/common/environment/build-style/cargo.sh
index bc836b06cf0..473750c7a35 100644
--- a/common/environment/build-style/cargo.sh
+++ b/common/environment/build-style/cargo.sh
@@ -8,6 +8,4 @@ if [ "$CROSS_BUILD" ]; then
 	makedepends+=" rust-std"
 fi
 
-export CARGO_REGISTRIES_CRATES_IO_PROTOCOL=sparse
-
 build_helper+=" rust"