diff --git a/src/fcmp/fcmp_rust/CMakeLists.txt b/src/fcmp/fcmp_rust/CMakeLists.txt
index ae97858b6..df0a6018b 100644
--- a/src/fcmp/fcmp_rust/CMakeLists.txt
+++ b/src/fcmp/fcmp_rust/CMakeLists.txt
@@ -26,6 +26,12 @@
 # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 # THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+if(ARCH_ID MATCHES "arm64")
+  set(RUST_ARCH "aarch64")
+else()
+  set(RUST_ARCH "${ARCH_ID}")
+endif()
+
 if(MINGW)
   set(RUST_PLATFORM "pc-windows")
   set(RUST_TOOLCHAIN "-gnu")
@@ -68,7 +74,7 @@ else()
   endif()
 endif()
 
-set(RUST_TARGET "${ARCH_ID}-${RUST_PLATFORM}${RUST_TOOLCHAIN}")
+set(RUST_TARGET "${RUST_ARCH}-${RUST_PLATFORM}${RUST_TOOLCHAIN}")
 
 if (CMAKE_BUILD_TYPE STREQUAL "Debug")
   set(CARGO_CMD cargo build --target "${RUST_TARGET}")
@@ -94,7 +100,7 @@ add_custom_command(
   OUTPUT ${FCMP_RUST_LIB}
   COMMAND CARGO_TARGET_DIR=${CMAKE_CURRENT_BINARY_DIR} ${CARGO_CMD}
   COMMAND cp ${CMAKE_CURRENT_SOURCE_DIR}/fcmp++.h ${FCMP_RUST_HEADER}
-  COMMAND cp ${CMAKE_CURRENT_BINARY_DIR}/${TARGET_DIR}/libfcmp_rust.a ${FCMP_RUST_LIB}
+  COMMAND cp ${CMAKE_CURRENT_BINARY_DIR}/${RUST_TARGET}/${TARGET_DIR}/libfcmp_rust.a ${FCMP_RUST_LIB}
   COMMAND echo "Finished copying fcmp rust targets"
   WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
   VERBATIM