diff --git a/usr.sbin/ngctl/config.c b/usr.sbin/ngctl/config.c
index 739a6934b83f..9b1a2751d136 100644
--- a/usr.sbin/ngctl/config.c
+++ b/usr.sbin/ngctl/config.c
@@ -54,7 +54,7 @@ const struct ngcmd config_cmd = {
 	"config <path> [arguments]",
 	"get or set configuration of node at <path>",
 	NULL,
-	{}
+	{ NULL }
 };
 
 static int
diff --git a/usr.sbin/ngctl/debug.c b/usr.sbin/ngctl/debug.c
index 491bfb41378d..d64e32d7f4cf 100644
--- a/usr.sbin/ngctl/debug.c
+++ b/usr.sbin/ngctl/debug.c
@@ -54,7 +54,7 @@ const struct ngcmd debug_cmd = {
 	" debugging verbosity level. If the argument is ``+'' or ``-''"
 	" the debug level is incremented or decremented; otherwise,"
 	" it must be an absolute numerical level.",
-	{}
+	{ NULL }
 };
 
 static int
diff --git a/usr.sbin/ngctl/mkpeer.c b/usr.sbin/ngctl/mkpeer.c
index 77c43a31eb55..1c6896b1d18c 100644
--- a/usr.sbin/ngctl/mkpeer.c
+++ b/usr.sbin/ngctl/mkpeer.c
@@ -54,7 +54,7 @@ const struct ngcmd mkpeer_cmd = {
 	" connection are \"hook\" on the original node and \"peerhook\""
 	" on the new node."
 	" If \"path\" is omitted then \".\" is assumed.",
-	{}
+	{ NULL }
 };
 
 static int
diff --git a/usr.sbin/ngctl/name.c b/usr.sbin/ngctl/name.c
index a557134ce8dc..7149d35dbc88 100644
--- a/usr.sbin/ngctl/name.c
+++ b/usr.sbin/ngctl/name.c
@@ -51,7 +51,7 @@ const struct ngcmd name_cmd = {
 	"name <path> <name>",
 	"Assign name <name> to the node at <path>",
 	NULL,
-	{}
+	{ NULL }
 };
 
 static int
diff --git a/usr.sbin/ngctl/status.c b/usr.sbin/ngctl/status.c
index 9fc5ff1ea2c0..7827c631513d 100644
--- a/usr.sbin/ngctl/status.c
+++ b/usr.sbin/ngctl/status.c
@@ -53,7 +53,7 @@ const struct ngcmd status_cmd = {
 	"status <path>",
 	"Get human readable status information from the node at <path>",
 	NULL,
-	{}
+	{ NULL }
 };
 
 static int
diff --git a/usr.sbin/ngctl/types.c b/usr.sbin/ngctl/types.c
index 0d5ef1811134..5ed4b53d00ea 100644
--- a/usr.sbin/ngctl/types.c
+++ b/usr.sbin/ngctl/types.c
@@ -52,7 +52,7 @@ const struct ngcmd types_cmd = {
 	"types",
 	"Show information about all installed node types",
 	NULL,
-	{}
+	{ NULL }
 };
 
 static int