diff --git a/include/llvm/Config/llvm-config.h.in b/include/llvm/Config/llvm-config.h.in
index f04385edc0c..b2257f37bbc 100644
--- a/include/llvm/Config/llvm-config.h.in
+++ b/include/llvm/Config/llvm-config.h.in
@@ -97,6 +97,9 @@
 /* Define to path to twopi program if found or 'echo twopi' otherwise */
 #undef LLVM_PATH_TWOPI
 
+/* Define to path to xdot.py program if found or 'echo xdot.py' otherwise */
+#undef LLVM_PATH_XDOT_PY
+
 /* Installation prefix directory */
 #undef LLVM_PREFIX