diff --git a/dangerzone/global_common.py b/dangerzone/global_common.py
index 63c902b..0f74a6e 100644
--- a/dangerzone/global_common.py
+++ b/dangerzone/global_common.py
@@ -51,8 +51,7 @@ class GlobalCommon(object):
         self.dz_container_path = self.get_dangerzone_container_path()
 
         # Preload list of PDF viewers on computer
-        # self.pdf_viewers = self._find_pdf_viewers()
-        self.pdf_viewers = {"Preview": "com.apple.Preview"}
+        self.pdf_viewers = self._find_pdf_viewers()
 
         # Languages supported by tesseract
         self.ocr_languages = {