diff --git a/modules/java/CMakeLists.txt b/modules/java/CMakeLists.txt
index e59c7b30de..c0242c5041 100644
--- a/modules/java/CMakeLists.txt
+++ b/modules/java/CMakeLists.txt
@@ -163,7 +163,7 @@ endforeach()
 
 add_custom_command(
     TARGET ${api_target} PRE_BUILD
-    COMMAND ${PYTHON_EXECUTABLE} "${GEN_JAVADOC}" "${CMAKE_CURRENT_SOURCE_DIR}/src/java" "${CMAKE_CURRENT_BINARY_DIR}"
+    COMMAND ${PYTHON_EXECUTABLE} "${GEN_JAVADOC}" "${CMAKE_CURRENT_SOURCE_DIR}/src/java" "${CMAKE_CURRENT_BINARY_DIR}" 2>"${CMAKE_CURRENT_BINARY_DIR}/get_javadoc_errors.log"
     WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
     DEPENDS ${java_project_files}
     DEPENDS ${generated_java_sources}