diff --git a/csharp/BUCK b/csharp/BUCK
index a28e7607..8e417e4d 100644
--- a/csharp/BUCK
+++ b/csharp/BUCK
@@ -5,7 +5,7 @@
 # LICENSE file in the root directory of this source tree. An additional grant
 # of patent rights can be found in the PATENTS file in the same directory.
 
-load("@xplat//configurations/buck:default_platform_defs", "is_apple_platform")
+load("@xplat//configurations/buck:default_platform_defs.bzl", "is_apple_platform")
 load("//:yoga_defs.bzl", "BASE_COMPILER_FLAGS", "yoga_dep", "cxx_library")
 
 COMPILER_FLAGS = BASE_COMPILER_FLAGS + ["-std=c++11"]