diff --git a/CMakeLists.txt b/CMakeLists.txt
index 272e114a95609f6da23bf16eae300be216361131..c56fe833eda8e7606a270231bfd898d8a3fabbf1 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -471,7 +471,7 @@ if(USE_CXX)
             set(HYSOP_CXX_LIBRARY_BUNDLE "${CMAKE_CURRENT_BINARY_DIR}/libcpp2hysop_bundle.so")
             add_custom_target(cpp2hysop_bundle
                 DEPENDS wheel
-                COMMAND cp `find ${CMAKE_CURRENT_BINARY_DIR}/build -name ${CPP_2_HYSOP}.so` ${HYSOP_CXX_LIBRARY_BUNDLE}
+                COMMAND cp `find ${CMAKE_CURRENT_BINARY_DIR}/build -name _${CPP_2_HYSOP}.so` ${HYSOP_CXX_LIBRARY_BUNDLE}
                 WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}"
                 COMMENT "Copy swig c++ library to link")
             set(HYSOP_CXX_LIBRARY ${HYSOP_CXX_LIBRARY_BUNDLE})