diff --git a/ctl/server.go b/ctl/server.go
index 129556b23..1a0754486 100644
--- a/ctl/server.go
+++ b/ctl/server.go
@@ -92,7 +92,7 @@ func BuildServerFlags(cmd *cobra.Command, srv *server.Command) {
 	// Transactional storage engine
 	// Note: the default for --tx must be kept "" empty string. Otherwise we
 	// cannot detect and honor the PILOSA_TXSRC env var over-ride.
-	flags.StringVarP(&srv.Config.Txsrc, "tx", "", "", fmt.Sprintf("transaction/storage to use: one of roaring, rbf, bolt, lmdb, or a blue-green setup: rbf_roaring, roaring_rbf, bolt_roaring, roaring_bolt, bolt_rbf, etc. The default is: %v. The env var PILOSA_TXSRC is over-ridden by --tx option on the command line.", pilosa.DefaultTxsrc))
+	flags.StringVarP(&srv.Config.Txsrc, "txsrc", "", "", fmt.Sprintf("transaction/storage to use: one of roaring, rbf, bolt, lmdb, or a blue-green setup: rbf_roaring, roaring_rbf, bolt_roaring, roaring_bolt, bolt_rbf, etc. The default is: %v. The env var PILOSA_TXSRC is over-ridden by --tx option on the command line.", pilosa.DefaultTxsrc))
 
 	// RowcacheOff
 	flags.BoolVarP((&srv.Config.RowcacheOff), "rowcache-off", "", srv.Config.RowcacheOff, "turn off the rowcache for all backends (reduces memory use)")
diff --git a/ctl/server_test.go b/ctl/server_test.go
index a1ce06ed8..81f49a5fd 100644
--- a/ctl/server_test.go
+++ b/ctl/server_test.go
@@ -42,7 +42,7 @@ func TestServerDefaultTxsrcFlags(t *testing.T) {
 	stdin, stdout, stderr := GetIO(buf)
 	Server := server.NewCommand(stdin, stdout, stderr)
 	BuildServerFlags(cm, Server)
-	if cm.Flags().Lookup("tx").DefValue != "" {
-		t.Fatal("cannot set the tx default in ctl/server.go, otherwise we won't know to let the environment override the lack of --tx on the command line. We want explicit command line --tx to override the env value.")
+	if cm.Flags().Lookup("txsrc").DefValue != "" {
+		t.Fatal("cannot set the txsrc default in ctl/server.go, otherwise we won't know to let the environment override the lack of --txsrc on the command line. We want explicit command line --txsrc to override the env value.")
 	}
 }