diff --git a/coreapi/CMakeLists.txt b/coreapi/CMakeLists.txt
index 6065c4a8f..f0a3bfdd6 100644
--- a/coreapi/CMakeLists.txt
+++ b/coreapi/CMakeLists.txt
@@ -114,6 +114,7 @@ set(LINPHONE_SOURCE_FILES_CXX
 set(LINPHONE_INCLUDE_DIRS ${LINPHONE_INCLUDE_DIRS})
 if(ENABLE_JAVA_WRAPPER)
 	list(APPEND LINPHONE_SOURCE_FILES_CXX ${LINPHONE_JNI_SOURCES})
+	set_source_files_properties(${LINPHONE_JNI_SOURCES} PROPERTIES GENERATED TRUE)
 endif()
 
 set(LINPHONE_SOURCE_FILES_OBJC)