diff --git a/src/runtime/python/pypgf.c b/src/runtime/python/pypgf.c
index 5d8b9bdd8..27655166b 100644
--- a/src/runtime/python/pypgf.c
+++ b/src/runtime/python/pypgf.c
@@ -1518,7 +1518,7 @@ typedef struct {
 } PgfBracketLznState;
 
 static void
-pgf_bracket_lzn_symbol_tokens(PgfLinFuncs** funcs, PgfTokens toks)
+pgf_bracket_lzn_symbol_tokens(PgfLinFuncs** funcs, PgfTokens* toks)
 {
 	PgfBracketLznState* state = gu_container(funcs, PgfBracketLznState, funcs);