diff --git a/runtime/Cpp/runtime/CMakeLists.txt b/runtime/Cpp/runtime/CMakeLists.txt
index a8503bb61..e7b01b7cb 100644
--- a/runtime/CMakeLists.txt
+++ b/runtime/CMakeLists.txt
@@ -1,17 +1,3 @@
-
-include(${CMAKE_ROOT}/Modules/ExternalProject.cmake)
-
-set(THIRDPARTY_DIR ${CMAKE_BINARY_DIR}/runtime/thirdparty)
-set(UTFCPP_DIR ${THIRDPARTY_DIR}/utfcpp)
-ExternalProject_Add(
-  utfcpp
-  GIT_REPOSITORY        "git://github.com/nemtrif/utfcpp"
-  GIT_TAG               "v3.1.1"
-  SOURCE_DIR            ${UTFCPP_DIR}
-  UPDATE_DISCONNECTED   1
-  CMAKE_ARGS            -DCMAKE_INSTALL_PREFIX=${UTFCPP_DIR}/install -Dgtest_force_shared_crt=ON
-  TEST_AFTER_INSTALL    1
-  STEP_TARGETS          build)
 
 
 include_directories(
@@ -23,8 +13,6 @@ include_directories(
   ${PROJECT_SOURCE_DIR}/runtime/src/tree
   ${PROJECT_SOURCE_DIR}/runtime/src/tree/pattern
   ${PROJECT_SOURCE_DIR}/runtime/src/tree/xpath
-  ${UTFCPP_DIR}/install/include/utf8cpp
-  ${UTFCPP_DIR}/install/include/utf8cpp/utf8
 )
 
 
@@ -131,13 +119,6 @@ install(DIRECTORY "${PROJECT_SOURCE_DIR}/runtime/src/"
         FILES_MATCHING PATTERN "*.h"
         )
 
-install(FILES "${UTFCPP_DIR}/source/utf8.h"
-        DESTINATION "include/antlr4-runtime")
-install(DIRECTORY "${UTFCPP_DIR}/source/utf8"
-        DESTINATION "include/antlr4-runtime"
-        COMPONENT dev
-        FILES_MATCHING PATTERN "*.h"
-        )