diff --git a/src/runtime/c/pgf/expr.cxx b/src/runtime/c/pgf/expr.cxx
index 0d0266726..b6b3919fe 100644
--- a/src/runtime/c/pgf/expr.cxx
+++ b/src/runtime/c/pgf/expr.cxx
@@ -609,7 +609,7 @@ PgfExpr PgfExprParser::parse_arg()
 	return arg;
 }
 
-PGF_INTERNAL PgfText wildcard = {size: 1, text: {'_','0'}};
+PGF_INTERNAL PgfText wildcard = {size: 1, text: {'_',0}};
 
 PgfBind *PgfExprParser::parse_bind(PgfBind *next)
 {