diff --git a/Userland/Libraries/LibWeb/CSS/Size.cpp b/Userland/Libraries/LibWeb/CSS/Size.cpp
index 504aac0352..2afcb3c0b8 100644
--- a/Userland/Libraries/LibWeb/CSS/Size.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Size.cpp
@@ -26,7 +26,7 @@ Size Size::make_auto()
     return Size { Type::Auto, Length::make_auto() };
 }
 
-Size Size::make_px(float px)
+Size Size::make_px(CSSPixels px)
 {
     return make_length(CSS::Length::make_px(px));
 }
diff --git a/Userland/Libraries/LibWeb/CSS/Size.h b/Userland/Libraries/LibWeb/CSS/Size.h
index dc52c3cdc7..7e9cc58a8a 100644
--- a/Userland/Libraries/LibWeb/CSS/Size.h
+++ b/Userland/Libraries/LibWeb/CSS/Size.h
@@ -24,7 +24,7 @@ public:
     };
 
     static Size make_auto();
-    static Size make_px(float);
+    static Size make_px(CSSPixels);
     static Size make_length(Length);
     static Size make_percentage(Percentage);
     static Size make_min_content();