diff --git a/.bazelrc b/.bazelrc
index 182f3be..e6d16ab 100644
--- a/.bazelrc
+++ b/.bazelrc
@@ -116,13 +116,6 @@
 common --custom_malloc=//targets:malloc
 build --@pigweed//pw_build:default_module_config=//system:module_config
 
-# Host platform default backends.
-common --@pigweed//pw_log:backend=@pigweed//pw_log_string
-common --@pigweed//pw_log:backend_impl=@pigweed//pw_log_string:impl
-common --@pigweed//pw_log_string:handler_backend=@pigweed//pw_system:log_backend
-common --@pigweed//pw_sys_io:backend=@pigweed//pw_sys_io_stdio
-common --@pigweed//pw_system:io_backend=@pigweed//pw_system:socket_target_io
-
 # RP2040 platform configuration
 build:rp2040 --platforms=//targets/rp2:rp2040
 test:rp2040 --run_under=@pigweed//targets/rp2040/py:unit_test_client