diff --git a/project/justfile b/project/justfile
index 9f089b2..f332e43 100644
--- a/project/justfile
+++ b/project/justfile
@@ -21,7 +21,7 @@ html:
 [group("generate")]
 pdf:
 	@gum spin --title="Generating pdf..." -- bash -xc "hpa generate pdf &>/dev/null"
-	@xdg-open Report.pdf &
+	@pidof zathura &>/dev/null || xdg-open Report.pdf &
 
 # Copy files to cloud storage directory.
 [group("generate")]