diff --git a/cmake/FindRust.cmake b/cmake/FindRust.cmake
index ffa86e33f1..2be2cd1fec 100644
--- a/cmake/FindRust.cmake
+++ b/cmake/FindRust.cmake
@@ -486,7 +486,7 @@ elseif(${CMAKE_BUILD_TYPE} STREQUAL "RelWithDebInfo")
 else()
     set(CARGO_BUILD_TYPE "debug")
 endif()
-string(STRIP "${RUSTFLAGS}" RUSTFLAGS)
+string(STRIP "${RUSTFLAGS} $ENV{RUSTFLAGS}" RUSTFLAGS)
 
 find_package_handle_standard_args(Rust
     REQUIRED_VARS cargo_EXECUTABLE