diff --git a/src/bin/pgbench/exprparse.y b/src/bin/pgbench/exprparse.y
index f6387d4a3c..17b065a6bf 100644
--- a/src/bin/pgbench/exprparse.y
+++ b/src/bin/pgbench/exprparse.y
@@ -23,7 +23,7 @@
 
 PgBenchExpr *expr_parse_result;
 
-static PgBenchExprList *make_elist(PgBenchExpr *exp, PgBenchExprList *list);
+static PgBenchExprList *make_elist(PgBenchExpr *expr, PgBenchExprList *list);
 static PgBenchExpr *make_null_constant(void);
 static PgBenchExpr *make_boolean_constant(bool bval);
 static PgBenchExpr *make_integer_constant(int64 ival);
diff --git a/src/include/replication/syncrep.h b/src/include/replication/syncrep.h
index b5446597b5..0f3b3a7955 100644
--- a/src/include/replication/syncrep.h
+++ b/src/include/replication/syncrep.h
@@ -103,7 +103,7 @@ extern void SyncRepUpdateSyncStandbysDefined(void);
 extern int	syncrep_yyparse(void);
 extern int	syncrep_yylex(void);
 extern void syncrep_yyerror(const char *str);
-extern void syncrep_scanner_init(const char *query_string);
+extern void syncrep_scanner_init(const char *str);
 extern void syncrep_scanner_finish(void);
 
 #endif							/* _SYNCREP_H */
diff --git a/src/include/replication/walsender_private.h b/src/include/replication/walsender_private.h
index 9c61f92c44..cb4da76a89 100644
--- a/src/include/replication/walsender_private.h
+++ b/src/include/replication/walsender_private.h
@@ -119,7 +119,7 @@ extern void WalSndSetState(WalSndState state);
 extern int	replication_yyparse(void);
 extern int	replication_yylex(void);
 extern void replication_yyerror(const char *str) pg_attribute_noreturn();
-extern void replication_scanner_init(const char *query_string);
+extern void replication_scanner_init(const char *str);
 extern void replication_scanner_finish(void);
 extern bool replication_scanner_is_replication_command(void);