diff --git a/cmake/modules/BuildRocksDB.cmake b/cmake/modules/BuildRocksDB.cmake
index 58ce26a6ac..2f8702c1dc 100644
--- a/cmake/modules/BuildRocksDB.cmake
+++ b/cmake/modules/BuildRocksDB.cmake
@@ -6,10 +6,6 @@ function(build_rocksdb)
   # CMAKE_PREFIX_PATH, for which reason we'll have to use some other separator.
   string(REPLACE ";" "!" CMAKE_PREFIX_PATH_ALT_SEP "${CMAKE_PREFIX_PATH}")
   list(APPEND rocksdb_CMAKE_ARGS -DCMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH_ALT_SEP})
-  if(CMAKE_TOOLCHAIN_FILE)
-    list(APPEND rocksdb_CMAKE_ARGS
-         -DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE})
-  endif()
 
   if(ALLOCATOR STREQUAL "jemalloc")
     list(APPEND rocksdb_CMAKE_ARGS -DWITH_JEMALLOC=ON)