--- a/library/lib/platforms/switch/swkbd.cpp
+++ b/library/lib/platforms/switch/swkbd.cpp
@@ -39,7 +39,9 @@ static SwkbdConfig createSwkbdBaseConfig(std::string headerText, std::string sub
     swkbdConfigSetSubText(&config, subText.c_str());
     swkbdConfigSetStringLenMax(&config, maxStringLength);
     swkbdConfigSetInitialText(&config, initialText.c_str());
+#if defined(SWKBD_CONFIG_SET_STRING_LEN_MAX_EXT)
     swkbdConfigSetStringLenMaxExt(&config, 1);
+#endif
     swkbdConfigSetBlurBackground(&config, true);
 
     return config;