diff --git a/compiler/src/dotty/tools/dotc/printing/PlainPrinter.scala b/compiler/src/dotty/tools/dotc/printing/PlainPrinter.scala
index f8151fb89e7d..618f7be6dac3 100644
--- a/compiler/src/dotty/tools/dotc/printing/PlainPrinter.scala
+++ b/compiler/src/dotty/tools/dotc/printing/PlainPrinter.scala
@@ -531,6 +531,8 @@ class PlainPrinter(_ctx: Context) extends Printer {
     case ClazzTag => "classOf[" ~ toText(const.typeValue) ~ "]"
     case CharTag => literalText(s"'${escapedChar(const.charValue)}'")
     case LongTag => literalText(const.longValue.toString + "L")
+    case DoubleTag => literalText(const.doubleValue.toString + "d")
+    case FloatTag => literalText(const.floatValue.toString + "f")
     case _ => literalText(String.valueOf(const.value))
   }
 
diff --git a/scaladoc-testcases/src/tests/genericMethods.scala b/scaladoc-testcases/src/tests/genericMethods.scala
index ca863f9c2269..c0027a60f243 100644
--- a/scaladoc-testcases/src/tests/genericMethods.scala
+++ b/scaladoc-testcases/src/tests/genericMethods.scala
@@ -9,7 +9,7 @@ class Types:
   def mixedAndAndOr(base: Int & String, nested: List[Int | Double] & Seq[String]): Unit
   = ???
 
-  def literal(i: 1, d: 3.3, c: 'c'): 34
+  def literal(i: 1, d: 3.3d, c: 'c'): 34
   = 34
 
   def byName(a: => Int, b: => String | Int): Unit