diff --git a/clang/lib/Interpreter/IncrementalParser.cpp b/clang/lib/Interpreter/IncrementalParser.cpp
--- a/clang/lib/Interpreter/IncrementalParser.cpp
+++ b/clang/lib/Interpreter/IncrementalParser.cpp
@@ -53,7 +53,7 @@
           switch (CI.getFrontendOpts().ProgramAction) {
           default:
             Err = llvm::createStringError(
-                std::errc::state_not_recoverable,
+                std::errc::operation_not_supported,
                 "Driver initialization failed. "
                 "Incremental mode for action %d is not supported",
                 CI.getFrontendOpts().ProgramAction);