diff --git a/CMakeLists.txt b/CMakeLists.txt
index e6ce0fc53..6dee586df 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -69,8 +69,7 @@ elseif (COMPILER_CACHE STREQUAL "auto")
         message(STATUS "Using sccache: ${SCCACHE}")
         set(CMAKE_C_COMPILER_LAUNCHER   "${SCCACHE}")
         set(CMAKE_CXX_COMPILER_LAUNCHER "${SCCACHE}")
-        # Remove this line and uncomment the one below when FCMP++ Rust libraries are merged.
-        # set(ENV{RUSTC_WRAPPER} "${SCCACHE}")
+        set(ENV{RUSTC_WRAPPER} "${SCCACHE}")
     elseif (CCACHE)
         message(STATUS "Using ccache: ${CCACHE}")
         set(CMAKE_C_COMPILER_LAUNCHER   "${CCACHE}")