diff --git a/coders/pdf.c b/coders/pdf.c
index f9e7dc0880..f548eeefaf 100644
--- a/coders/pdf.c
+++ b/coders/pdf.c
@@ -612,7 +612,7 @@ static Image *ReadPDFImage(const ImageInfo *image_info,ExceptionInfo *exception)
       sanitize_passphrase=SanitizeDelegateString(image_info->authenticate);
 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
       (void) FormatLocaleString(passphrase,MagickPathExtent,
-        "-sPDFPassword=\"%s\" ",sanitize_passphrase);
+        "\"-sPDFPassword=%s\" ",sanitize_passphrase);
 #else
       (void) FormatLocaleString(passphrase,MagickPathExtent,
         "-sPDFPassword='%s' ",sanitize_passphrase);