diff --git a/src/table/settings.ini b/src/table/settings.ini
index 482933e67f..4c3d6ce0d4 100644
--- a/src/table/settings.ini
+++ b/src/table/settings.ini
@@ -1380,6 +1380,7 @@ guiflags = SGF_NO_NETWORK
 def      = DEF_SNOWLINE_HEIGHT
 min      = MIN_SNOWLINE_HEIGHT
 max      = MAX_SNOWLINE_HEIGHT
+interval = 1
 str      = STR_CONFIG_SETTING_SNOWLINE_HEIGHT
 strhelp  = STR_CONFIG_SETTING_SNOWLINE_HEIGHT_HELPTEXT
 strval   = STR_JUST_COMMA