diff --git a/backend/coreapp/flags.py b/backend/coreapp/flags.py
index 590bc0f2e..0e42f1717 100644
--- a/backend/coreapp/flags.py
+++ b/backend/coreapp/flags.py
@@ -310,6 +310,7 @@ def to_json(self) -> Dict[str, Union[str, List[str]]]:
     Checkbox("ghs_enable_noinline", "--enable_noinline"),
     Checkbox("ghs_link_once_templates", "--link_once_templates"),
     Checkbox("ghs_only_explicit_reg_use", "-only_explicit_reg_use"),
+    Checkbox("ghs_dotciscxx", "-dotciscxx"),
 ]
 
 COMMON_MSVC_FLAGS: Flags = [
diff --git a/frontend/src/lib/i18n/locales/en/compilers.json b/frontend/src/lib/i18n/locales/en/compilers.json
index a2ca267f3..c87bb6716 100644
--- a/frontend/src/lib/i18n/locales/en/compilers.json
+++ b/frontend/src/lib/i18n/locales/en/compilers.json
@@ -383,6 +383,8 @@
     "mwcc_line_numbers_on": "Enable debug info (C line numbers)",
     "mwcc_align_powerpc": "PowerPC alignment; default",
 
+    "ghs_dotciscxx": "Treat all files as C++ files",
+
     "msvc_opt_level": "Optimization level",
     "msvc_opt_level./O1": "minimize space",
     "msvc_opt_level./O2": "maximize speed",