Index: src/command-line-parser.cpp
--- src/command-line-parser.cpp.orig
+++ src/command-line-parser.cpp
@@ -505,7 +505,7 @@ options_t parse_command_line(int argc, char *argv[])
 
     // --cache
     app.add_option("-C,--cache", options.cache)
-        ->description("Use up to SIZE MB for caching nodes (default: 800).")
+        ->description("Use up to SIZE MB for caching nodes (default: 100).")
         ->type_name("SIZE")
         ->group("Middle options");
 
