diff --git a/contrib/oid2name/oid2name.c b/contrib/oid2name/oid2name.c
index d3a4a50005b..998f2c321e3 100644
--- a/contrib/oid2name/oid2name.c
+++ b/contrib/oid2name/oid2name.c
@@ -340,7 +340,7 @@ sql_conn(struct options *my_opts)
 	if (PQstatus(conn) == CONNECTION_BAD)
 	{
 		fprintf(stderr, "%s: could not connect to database %s: %s",
-				"oid2name", my_opts->dbname, PQerrorMessage(conn));
+				"oid2name", PQdb(conn) ? PQdb(conn) : "", PQerrorMessage(conn));
 		PQfinish(conn);
 		exit(1);
 	}
diff --git a/contrib/vacuumlo/vacuumlo.c b/contrib/vacuumlo/vacuumlo.c
index 73c06a043ed..6f0baa7e7c1 100644
--- a/contrib/vacuumlo/vacuumlo.c
+++ b/contrib/vacuumlo/vacuumlo.c
@@ -130,7 +130,7 @@ vacuumlo(const char *database, const struct _param *param)
 	if (PQstatus(conn) == CONNECTION_BAD)
 	{
 		fprintf(stderr, "Connection to database \"%s\" failed:\n%s",
-				database, PQerrorMessage(conn));
+				PQdb(conn) ? PQdb(conn) : "", PQerrorMessage(conn));
 		PQfinish(conn);
 		return -1;
 	}
diff --git a/src/bin/pg_dump/pg_dumpall.c b/src/bin/pg_dump/pg_dumpall.c
index c04f417cf05..4f924b5741d 100644
--- a/src/bin/pg_dump/pg_dumpall.c
+++ b/src/bin/pg_dump/pg_dumpall.c
@@ -1773,7 +1773,7 @@ connectDatabase(const char *dbname, const char *connection_string,
 		if (fail_on_error)
 		{
 			pg_log_error("could not connect to database \"%s\": %s",
-						 dbname, PQerrorMessage(conn));
+						 PQdb(conn) ? PQdb(conn) : "", PQerrorMessage(conn));
 			exit_nicely(1);
 		}
 		else
diff --git a/src/bin/pgbench/pgbench.c b/src/bin/pgbench/pgbench.c
index bf32638b6fd..79b983b4ef5 100644
--- a/src/bin/pgbench/pgbench.c
+++ b/src/bin/pgbench/pgbench.c
@@ -1206,7 +1206,7 @@ doConnect(void)
 	if (PQstatus(conn) == CONNECTION_BAD)
 	{
 		fprintf(stderr, "connection to database \"%s\" failed:\n%s",
-				dbName, PQerrorMessage(conn));
+				PQdb(conn), PQerrorMessage(conn));
 		PQfinish(conn);
 		return NULL;
 	}
@@ -5678,7 +5678,8 @@ main(int argc, char **argv)
 
 	if (PQstatus(con) == CONNECTION_BAD)
 	{
-		fprintf(stderr, "connection to database \"%s\" failed\n", dbName);
+		fprintf(stderr, "connection to database \"%s\" failed\n",
+				PQdb(con) ? PQdb(con) : "");
 		fprintf(stderr, "%s", PQerrorMessage(con));
 		exit(1);
 	}