diff --git a/data/core/help.cfg b/data/core/help.cfg
index dadfdb18da5..3e4cea61d7c 100644
--- a/data/core/help.cfg
+++ b/data/core/help.cfg
@@ -464,10 +464,10 @@ Of these categories, only leaders are built into the basic game rules. The other
         title= _ "Time of Day"
         text= _ "The time of day affects the damage of certain units as follows:
 
-• <span face='Serif' size='15'>LAWFUL</span> units get +25% damage in daytime, and −25% damage at night.
-• <span face='Serif' size='15'>CHAOTIC</span> units get +25% damage at night, and −25% in daytime.
-• <span face='Serif' size='15'>NEUTRAL</span> units are unaffected by the time of day.
-• <span face='Serif' size='15'>LIMINAL</span> units get +25% damage during twilight." + _ "
+• <span weight='heavy' size='15'>LAWFUL</span> units get +25% damage in daytime, and −25% damage at night.
+• <span weight='heavy' size='15'>CHAOTIC</span> units get +25% damage at night, and −25% in daytime.
+• <span weight='heavy' size='15'>NEUTRAL</span> units are unaffected by the time of day.
+• <span weight='heavy' size='15'>LIMINAL</span> units get +25% damage during twilight." + _ "
 
 The current time of day can be observed under the minimap in the status pane. For the usual day/night cycle, morning and afternoon count as day, first and second watch count as night:" +
             "
diff --git a/src/gui/widgets/rich_label.cpp b/src/gui/widgets/rich_label.cpp
index e41a325c353..11ba64fc947 100644
--- a/src/gui/widgets/rich_label.cpp
+++ b/src/gui/widgets/rich_label.cpp
@@ -573,7 +573,7 @@ std::pair<config, point> rich_label::get_parsed_text(
 			} else if(key == "header" || key == "h") {
 
 				const auto [start, end] = add_text(*curr_item, line);
-				add_attribute(*curr_item, "face", start, end, "serif");
+				add_attribute(*curr_item, "weight", start, end, "heavy");
 				add_attribute(*curr_item, "color", start, end, font::string_to_color("white").to_hex_string());
 				add_attribute(*curr_item, "size", start, end, std::to_string(font::SIZE_TITLE - 2));