diff --git a/cuda/private/toolchain_configs/clang.bzl b/cuda/private/toolchain_configs/clang.bzl
index aa85ce01..c201a04c 100644
--- a/cuda/private/toolchain_configs/clang.bzl
+++ b/cuda/private/toolchain_configs/clang.bzl
@@ -625,7 +625,7 @@ cuda_toolchain_config = rule(
     doc = """This rule provides the predefined cuda toolchain configuration for Clang.""",
     implementation = _impl,
     attrs = {
-        "cuda_toolkit": attr.label(mandatory = True, providers = [CudaToolkitInfo], doc = "A target that provides a `CudaToolkitInfo`."),
+        "cuda_toolkit": attr.label(mandatory = True, providers = [CudaToolkitInfo], cfg = "exec", doc = "A target that provides a `CudaToolkitInfo`."),
         "toolchain_identifier": attr.string(values = ["clang"], mandatory = True),
         "_cc_toolchain": attr.label(default = "@bazel_tools//tools/cpp:current_cc_toolchain"),  # legacy behaviour
     },