diff --git a/bin/test/data/SourceGroupTestSuite/cxx_c_empty/expected_output/output_unix.txt b/bin/test/data/SourceGroupTestSuite/cxx_c_empty/expected_output/output_unix.txt
index 30b17fcd..e1e3d461 100644
--- a/bin/test/data/SourceGroupTestSuite/cxx_c_empty/expected_output/output_unix.txt
+++ b/bin/test/data/SourceGroupTestSuite/cxx_c_empty/expected_output/output_unix.txt
@@ -2,6 +2,8 @@ SourceFilePath: "src/Test.c"
 	IndexedPath: "src"
 	CompilerFlag: "--target=test_arch-test_vendor-test_sys-test_abi"
 	CompilerFlag: "-std=c11"
+	CompilerFlag: "-x"
+	CompilerFlag: "c"
 	CompilerFlag: "-isystem"
 	CompilerFlag: "src"
 	CompilerFlag: "-isystem"