diff --git a/dnSpy/dnSpy.Decompiler/CSharp/CSharpFormatter.cs b/dnSpy/dnSpy.Decompiler/CSharp/CSharpFormatter.cs
index 7bd1e1f093..1b9f5c7f0b 100644
--- a/dnSpy/dnSpy.Decompiler/CSharp/CSharpFormatter.cs
+++ b/dnSpy/dnSpy.Decompiler/CSharp/CSharpFormatter.cs
@@ -1306,6 +1306,10 @@ public void WriteToolTip(ISourceVariable? variable) {
 			OutputWrite(isLocal ? dnSpy_Decompiler_Resources.ToolTip_Local : dnSpy_Decompiler_Resources.ToolTip_Parameter, BoxedTextColor.Text);
 			OutputWrite(DescriptionParenClose, BoxedTextColor.Punctuation);
 			WriteSpace();
+			if (pd is not null && pd.CustomAttributes.IsDefined("System.ParamArrayAttribute")) {
+				OutputWrite(Keyword_params, BoxedTextColor.Keyword);
+				WriteSpace();
+			}
 			Write(variable.Type, !isLocal ? pd : null, null, null, forceReadOnly: (variable.Flags & SourceVariableFlags.ReadOnlyReference) != 0, attributeProvider: pd);
 			WriteSpace();
 			WriteIdentifier(TypeFormatterUtils.GetName(variable), isLocal ? BoxedTextColor.Local : BoxedTextColor.Parameter);
diff --git a/dnSpy/dnSpy.Decompiler/VisualBasic/VisualBasicFormatter.cs b/dnSpy/dnSpy.Decompiler/VisualBasic/VisualBasicFormatter.cs
index 2e1d9c1a5a..556df3c52d 100644
--- a/dnSpy/dnSpy.Decompiler/VisualBasic/VisualBasicFormatter.cs
+++ b/dnSpy/dnSpy.Decompiler/VisualBasic/VisualBasicFormatter.cs
@@ -1106,6 +1106,10 @@ public void WriteToolTip(ISourceVariable? variable) {
 				OutputWrite(Keyword_ByRef, BoxedTextColor.Keyword);
 				WriteSpace();
 			}
+			if (pd is not null && pd.CustomAttributes.IsDefined("System.ParamArrayAttribute")) {
+				OutputWrite(Keyword_params, BoxedTextColor.Keyword);
+				WriteSpace();
+			}
 			WriteIdentifier(TypeFormatterUtils.GetName(variable), isLocal ? BoxedTextColor.Local : BoxedTextColor.Parameter);
 			if (pd is not null)
 				WriteToken(pd);