diff --git a/app/src/main.c b/app/src/main.c
index da0d2074..04be1ab0 100644
--- a/app/src/main.c
+++ b/app/src/main.c
@@ -127,11 +127,11 @@ static void usage(const char *arg0) {
         "\n"
         "    --window-width value\n"
         "        Set the initial window width.\n"
-        "        Default is -1 (automatic).\n"
+        "        Default is 0 (automatic).\n"
         "\n"
         "    --window-height value\n"
         "        Set the initial window width.\n"
-        "        Default is -1 (automatic).\n"
+        "        Default is 0 (automatic).\n"
         "\n"
         "Shortcuts:\n"
         "\n"