diff --git a/poppler-data.yaml b/poppler-data.yaml
index 1980c5e..45f76d2 100644
--- a/poppler-data.yaml
+++ b/poppler-data.yaml
@@ -1,4 +1,4 @@
 version_control: git
 src_repo: https://gitlab.freedesktop.org/poppler/poppler-data.git
 tag_prefix: ^POPPLER_DATA_
-seperator: _
+seperator: "_"