diff --git a/indra/cmake/LLKDU.cmake b/indra/cmake/LLKDU.cmake
index bbbb2df36666bbe7bbec24911f2fe58ef93903eb..13c2b86e2fa50a35435da4708ac4cbd42a9a557c 100644
--- a/indra/cmake/LLKDU.cmake
+++ b/indra/cmake/LLKDU.cmake
@@ -14,7 +14,7 @@ if (USE_KDU)
   else (WINDOWS)
     set(KDU_LIBRARY libkdu.a)
   endif (WINDOWS)
-  set(KDU_INCLUDE_DIR ${ARCH_PREBUILT_DIRS_RELEASE}/include/kdu)
+  set(KDU_INCLUDE_DIR ${AUTOBUILD_INSTALL_DIR}/include/kdu)
   set(LLKDU_INCLUDE_DIRS ${LIBS_OPEN_DIR}/llkdu)
   set(LLKDU_LIBRARIES llkdu)
 endif (USE_KDU)