diff --git a/gramps/gen/datehandler/_datestrings.py b/gramps/gen/datehandler/_datestrings.py
index f2761eafe5..cc1a5fedf9 100644
--- a/gramps/gen/datehandler/_datestrings.py
+++ b/gramps/gen/datehandler/_datestrings.py
@@ -335,7 +335,7 @@ def __init__(self, locale):
     except AttributeError:
         localized_months = old_long
 
-    def print_po_snippet(en_loc_old_lists, context, line: int = 10000):
+    def print_po_snippet(en_loc_old_lists, context, line: int):
         for m, localized, old in zip(*en_loc_old_lists):
             if m == "":
                 continue
@@ -351,61 +351,75 @@ def print_po_snippet(en_loc_old_lists, context, line: int = 10000):
                 )
             )
             line += 1
+            return line
 
     try:
         localized_months = dd.__class__.long_months
     except AttributeError:
         localized_months = old_long
-    print_po_snippet(
+    line = 10000
+    line = print_po_snippet(
         (ds_EN.long_months, localized_months, old_long),
         "localized lexeme inflections",
+        line=line,
     )
 
     try:
         localized_months = dd.__class__.short_months
     except AttributeError:
         localized_months = old_short
-    print_po_snippet(
+    line = print_po_snippet(
         (ds_EN.short_months, localized_months, old_short),
         "localized lexeme inflections - short month form",
+        line=line,
     )
 
-    print_po_snippet((ds_EN.long_days, old_days, old_days), "")
+    line = print_po_snippet((ds_EN.long_days, old_days, old_days), "", line=line)
 
-    print_po_snippet((ds_EN.short_days, old_short_days, old_short_days), "")
+    line = print_po_snippet(
+        (ds_EN.short_days, old_short_days, old_short_days), "", line=line
+    )
 
     try:
         loc = dd.__class__.hebrew
-        print_po_snippet((ds_EN.hebrew, loc, loc), "Hebrew month lexeme")
+        line = print_po_snippet(
+            (ds_EN.hebrew, loc, loc), "Hebrew month lexeme", line=line
+        )
     except AttributeError:
         pass
 
     try:
         loc = dd.__class__.french
-        print_po_snippet((ds_EN.french, loc, loc), "French month lexeme")
+        line = print_po_snippet(
+            (ds_EN.french, loc, loc), "French month lexeme", line=line
+        )
     except AttributeError:
         pass
 
     try:
         loc = dd.__class__.islamic
-        print_po_snippet((ds_EN.islamic, loc, loc), "Islamic month lexeme")
+        line = print_po_snippet(
+            (ds_EN.islamic, loc, loc), "Islamic month lexeme", line=line
+        )
     except AttributeError:
         pass
 
     try:
         loc = dd.__class__.persian
-        print_po_snippet((ds_EN.persian, loc, loc), "Persian month lexeme")
+        line = print_po_snippet(
+            (ds_EN.persian, loc, loc), "Persian month lexeme", line=line
+        )
     except AttributeError:
         pass
 
     try:
         loc = dd.__class__._mod_str
-        print_po_snippet((ds_EN.modifiers, loc, loc), "date modifier")
+        line = print_po_snippet((ds_EN.modifiers, loc, loc), "date modifier", line=line)
     except AttributeError:
         pass
 
     try:
         loc = dd.__class__._qual_str
-        print_po_snippet((ds_EN.qualifiers, loc, loc), "date quality")
+        line = print_po_snippet((ds_EN.qualifiers, loc, loc), "date quality", line=line)
     except AttributeError:
         pass