diff --git a/man/lightdm-webkit2-greeter.1 b/man/lightdm-webkit2-greeter.1
index d517f66..5d5dff9 100644
--- a/man/lightdm-webkit2-greeter.1
+++ b/man/lightdm-webkit2-greeter.1
@@ -240,6 +240,24 @@ Array\&. The users that are able to log in\&. Returns an Array of LightDMUser
 objects\&.
 .RE
 .PP
+The following calls can be made to read configuration keys out of the
+lightdm-webkit2-greeter configuration file\&.
+.PP
+config\&.get_str(section, key)\fR
+.RS 4
+Returns the string value associated with key under the "section" in the configuration file\&.
+.RE
+.PP
+config\&.get_num(section, key)\fR
+.RS 4
+Returns the numeric value associated with key under the "section" in the configuration file\&.
+.RE
+.PP
+config\&.get_bool(section, key)\fR
+.RS 4
+Returns the boolean value associated with key under the "section" in the configuration file\&.
+.RE
+.PP
 Please see the LightDM API documentation for the complete list of calls
 available\&.  The lightdm-webkit2-greeter implements all of the LightDM API\&.
 .PP
diff --git a/src/lightdm-webkit2-greeter-ext.c b/src/lightdm-webkit2-greeter-ext.c
index cf5b90a..7e03255 100644
--- a/src/lightdm-webkit2-greeter-ext.c
+++ b/src/lightdm-webkit2-greeter-ext.c
@@ -1039,12 +1039,15 @@ get_conf_str_cb(JSContextRef context,
 	}
 
 	section = arg_to_string(context, arguments[0], exception);
-
 	if (!section) {
 		return JSValueMakeNull(context);
 	}
 
 	key = arg_to_string(context, arguments[1], exception);
+	if (!key) {
+		return JSValueMakeNull(context);
+	}
+
 	value = g_key_file_get_string(keyfile, section, key, &err);
 
 	if (err) {
@@ -1083,12 +1086,15 @@ get_conf_num_cb(JSContextRef context,
 	}
 
 	section = arg_to_string(context, arguments[0], exception);
-
 	if (!section) {
 		return JSValueMakeNull(context);
 	}
 
 	key = arg_to_string(context, arguments[1], exception);
+	if (!key) {
+		return JSValueMakeNull(context);
+	}
+
 	value = g_key_file_get_integer(keyfile, section, key, &err);
 
 	if (err) {
@@ -1123,12 +1129,15 @@ get_conf_bool_cb(JSContextRef context,
 	}
 
 	section = arg_to_string(context, arguments[0], exception);
-
 	if (!section) {
 		return JSValueMakeNull(context);
 	}
 
 	key = arg_to_string(context, arguments[1], exception);
+	if (!key) {
+		return JSValueMakeNull(context);
+	}
+
 	value = g_key_file_get_boolean(keyfile, section, key, &err);
 
 	if (err) {
@@ -1200,7 +1209,6 @@ static const JSStaticValue lightdm_greeter_values[] = {
 	{"autologin_user",      get_autologin_user_cb,      NULL,          kJSPropertyAttributeReadOnly},
 	{"autologin_guest",     get_autologin_guest_cb,     NULL,          kJSPropertyAttributeReadOnly},
 	{"autologin_timeout",   get_autologin_timeout_cb,   NULL,          kJSPropertyAttributeReadOnly},
-	{"iconsdir",            get_iconsdir_cb,            NULL,          kJSPropertyAttributeReadOnly},
 	{NULL,                  NULL,                       NULL,          0}};
 
 static const JSStaticFunction lightdm_greeter_functions[] = {