diff --git a/src/option_parser.cpp b/src/option_parser.cpp
index 6fdc0cd1..3d06dae9 100644
--- a/src/option_parser.cpp
+++ b/src/option_parser.cpp
@@ -53,7 +53,7 @@ enum
     MERGERFS_OPT_VERSION
   };
 
-struct OptsState
+struct OptParseState
 {
   std::vector<
 };