diff --git a/mlir/cmake/modules/AddMLIR.cmake b/mlir/cmake/modules/AddMLIR.cmake
--- a/mlir/cmake/modules/AddMLIR.cmake
+++ b/mlir/cmake/modules/AddMLIR.cmake
@@ -29,7 +29,7 @@
 # Generate Documentation
 function(add_mlir_doc doc_filename command output_file output_directory)
   set(LLVM_TARGET_DEFINITIONS ${doc_filename}.td)
-  tablegen(MLIR ${output_file}.md ${command} "-I${MLIR_MAIN_INCLUDE_DIR}" "-I${MLIR_INCLUDE_DIR}")
+  tablegen(MLIR ${output_file}.md ${command})
   set(GEN_DOC_FILE ${MLIR_BINARY_DIR}/docs/${output_directory}${output_file}.md)
   add_custom_command(
           OUTPUT ${GEN_DOC_FILE}