diff -upr gpredict-2.2.1/src/qth-data.h gpredict-2.2.1.fix/src/qth-data.h
--- gpredict-2.2.1/src/qth-data.h	2017-12-29 18:28:07.000000000 +0800
+++ gpredict-2.2.1.fix/src/qth-data.h	2020-06-22 21:39:47.101031753 +0800
@@ -30,7 +30,7 @@ typedef struct {
     gint            alt;        /*!< Altitude above sea level in meters. */
 } qth_small_t;
 
-enum {
+typedef enum {
     QTH_STATIC_TYPE = 0,
     QTH_GPSD_TYPE
 } qth_data_type;