diff --git a/doc/lightningd-config.5 b/doc/lightningd-config.5
index 9cdf50e09..161c8cdba 100644
--- a/doc/lightningd-config.5
+++ b/doc/lightningd-config.5
@@ -149,6 +149,12 @@ is a relative path, it is relative to the starting directory, not
 readable (we allow missing files in the default case)\. Using this inside
 a configuration file is meaningless\.
 
+
+ \fBwallet\fR=\fIDSN\fR
+Identify the location of the wallet\. This is a fully qualified data source
+name, including a scheme such as \fBsqlite3\fR or \fBpostgres\fR followed by the
+connection parameters\.
+
 .SH Lightning node customization options
 
  \fBalias\fR=\fIRRGGBB\fR
diff --git a/doc/lightningd-config.5.md b/doc/lightningd-config.5.md
index 1b6a08ea6..7b341fbe3 100644
--- a/doc/lightningd-config.5.md
+++ b/doc/lightningd-config.5.md
@@ -128,6 +128,11 @@ is a relative path, it is relative to the starting directory, not
 readable (we allow missing files in the default case). Using this inside
 a configuration file is meaningless.
 
+ **wallet**=*DSN*
+Identify the location of the wallet. This is a fully qualified data source
+name, including a scheme such as `sqlite3` or `postgres` followed by the
+connection parameters.
+
 ### Lightning node customization options
 
  **alias**=*RRGGBB*
diff --git a/lightningd/lightningd.h b/lightningd/lightningd.h
index 04e08ceae..06452c58f 100644
--- a/lightningd/lightningd.h
+++ b/lightningd/lightningd.h
@@ -228,6 +228,8 @@ struct lightningd {
 	const char *original_directory;
 
 	struct plugins *plugins;
+
+	char *wallet_dsn;
 };
 
 /* Turning this on allows a tal allocation to return NULL, rather than aborting.
diff --git a/lightningd/options.c b/lightningd/options.c
index 613604388..8b35ce8ab 100644
--- a/lightningd/options.c
+++ b/lightningd/options.c
@@ -808,6 +808,11 @@ static void handle_minimal_config_opts(struct lightningd *ld,
 			       opt_ignore_talstr, opt_show_charp,
 			       &ld->config_dir,
 			       "Set working directory. All other files are relative to this");
+
+	ld->wallet_dsn = tal_fmt(ld, "sqlite3://%s/lightningd.sqlite3", ld->config_dir);
+	opt_register_early_arg("--wallet", opt_set_talstr, NULL,
+			       &ld->wallet_dsn,
+			       "Location of the wallet database.");
 }
 
 static void register_opts(struct lightningd *ld)