diff --git a/libs/openzap/src/isdn/Q931.c b/libs/openzap/src/isdn/Q931.c
index cc5ff4f00b..afc57539d0 100644
--- a/libs/openzap/src/isdn/Q931.c
+++ b/libs/openzap/src/isdn/Q931.c
@@ -721,4 +721,5 @@ const char *q931_error_to_name(q931_error_t error)
 		return "";
 	}
 	return q931_error_names[index];
-}
\ No newline at end of file
+}
+
diff --git a/libs/openzap/src/testisdn.c b/libs/openzap/src/testisdn.c
index 11e945ec79..78f3e18a41 100644
--- a/libs/openzap/src/testisdn.c
+++ b/libs/openzap/src/testisdn.c
@@ -25,7 +25,7 @@ int main(int argc, char *argv[])
 	}
 	
 	
-	if (zap_isdn_configure_span(span, Q931_TE, 0, on_signal) == ZAP_SUCCESS) {
+	if (zap_isdn_configure_span(span, Q931_TE, Q931_Dialect_National, on_signal) == ZAP_SUCCESS) {
 		zap_isdn_start(span);
 	} else {
 		fprintf(stderr, "Error starting ISDN D-Channel\n");