diff --git a/core/src/ndmp/CMakeLists.txt b/core/src/ndmp/CMakeLists.txt
index 67855d84c28..5c5bbb81550 100644
--- a/core/src/ndmp/CMakeLists.txt
+++ b/core/src/ndmp/CMakeLists.txt
@@ -93,8 +93,8 @@ foreach(NDMP_VERSION 0 1 2 3 4 9)
          PRE_BUILD
          OUTPUT ndmp${NDMP_VERSION}.h ndmp${NDMP_VERSION}_xdr.c
          COMMAND  ${RPCGEN} ${RPCGEN_PARAMS} ${CMAKE_CURRENT_SOURCE_DIR}/ndmp${NDMP_VERSION}.x
-         COMMAND cp ndmp${NDMP_VERSION}.h ndmp${NDMP_VERSION}_xdr.c ${CMAKE_CURRENT_SOURCE_DIR}
-              || cp ${CMAKE_CURRENT_SOURCE_DIR}/ndmp${NDMP_VERSION}.h ${CMAKE_CURRENT_SOURCE_DIR}/ndmp${NDMP_VERSION}_xdr.c  ${CMAKE_CURRENT_BINARY_DIR}
+         COMMAND  test -e ${CMAKE_CURRENT_SOURCE_DIR}/ndmp${NDMP_VERSION}.h && cp ${CMAKE_CURRENT_SOURCE_DIR}/ndmp${NDMP_VERSION}.h ${CMAKE_CURRENT_SOURCE_DIR}/ndmp${NDMP_VERSION}_xdr.c ${CMAKE_CURRENT_BINARY_DIR} || :
+         COMMAND  test -e ndmp${NDMP_VERSION}.h && cp ndmp${NDMP_VERSION}.h ndmp${NDMP_VERSION}_xdr.c ${CMAKE_CURRENT_SOURCE_DIR} || :
          DEPENDS ${RPCGEN} ${CMAKE_CURRENT_SOURCE_DIR}/ndmp${NDMP_VERSION}.x
          )
    ENDIF()