diff --git a/MSEdgeRedirect.au3 b/MSEdgeRedirect.au3
index 8f83e3c..bd9be95 100644
--- a/MSEdgeRedirect.au3
+++ b/MSEdgeRedirect.au3
@@ -555,7 +555,7 @@ Func _DecodeAndRun($sEdge = $aEdges[1], $sCMDLine = "")
 			If _GetSettingValue("NoPDFs") Then
 				$sCMDLine = StringReplace($sCMDLine, "--single-argument ", "")
 				Switch _GetSettingValue("PDFApp")
-					Case "Default"
+					Case "Default", False
 						If RunPDFCheck() And _IsSafePDF($sCMDLine) Then ShellExecute('"' & $sCMDLine & '"')
 					Case Else
 						ShellExecute(_GetSettingValue("PDFApp"), '"' & $sCMDLine & '"')