diff --git a/plugins/kmail/bodypartformatter/CMakeLists.txt b/plugins/kmail/bodypartformatter/CMakeLists.txt
index 9bdd490b..b9b64f53 100644
--- a/plugins/kmail/bodypartformatter/CMakeLists.txt
+++ b/plugins/kmail/bodypartformatter/CMakeLists.txt
@@ -29,6 +29,7 @@ include_directories(
   ${CMAKE_BINARY_DIR}
   ${CMAKE_SOURCE_DIR}
   ${CMAKE_SOURCE_DIR}/libkdepim
+  ${CMAKE_SOURCE_DIR}/mimelib
   ${CMAKE_SOURCE_DIR}/libkmime
   ${CMAKE_SOURCE_DIR}/libemailfunctions
   ${CMAKE_SOURCE_DIR}/kmail