diff --git a/src/db.c b/src/db.c
index e890fac2..8fbedf84 100644
--- a/src/db.c
+++ b/src/db.c
@@ -2344,7 +2344,7 @@ db_build_query_count_items(struct query_params *qp, struct query_clause *qc)
 
   qp->results = 1;
 
-  query = sqlite3_mprintf("SELECT COUNT(*), SUM(song_length), COUNT(DISTINCT songartistid), COUNT(DISTINCT songalbumid) FROM files f %s;", qc->where);
+  query = sqlite3_mprintf("SELECT COUNT(*), SUM(song_length), COUNT(DISTINCT songartistid), COUNT(DISTINCT songalbumid), SUM(file_size) FROM files f %s;", qc->where);
   if (!query)
     DPRINTF(E_LOG, L_DB, "Out of memory for query string\n");
 
@@ -2699,6 +2699,7 @@ db_query_fetch_count(struct filecount_info *fci, struct query_params *qp)
   fci->length = sqlite3_column_int64(qp->stmt, 1);
   fci->artist_count = sqlite3_column_int(qp->stmt, 2);
   fci->album_count = sqlite3_column_int(qp->stmt, 3);
+  fci->file_size = sqlite3_column_int64(qp->stmt, 4);
 
   return 0;
 }
diff --git a/src/db.h b/src/db.h
index 61701a85..75fb3941 100644
--- a/src/db.h
+++ b/src/db.h
@@ -474,6 +474,7 @@ struct filecount_info {
   uint64_t length;
   uint32_t artist_count;
   uint32_t album_count;
+  uint64_t file_size;
 };
 
 /* Directory ids must be in sync with the ids in Q_DIR* in db_init.c */
diff --git a/src/httpd_jsonapi.c b/src/httpd_jsonapi.c
index ded5e95a..f2050ac7 100644
--- a/src/httpd_jsonapi.c
+++ b/src/httpd_jsonapi.c
@@ -1205,6 +1205,7 @@ jsonapi_reply_library(struct httpd_request *hreq)
       json_object_object_add(jreply, "db_playtime", json_object_new_int64((fci.length / 1000)));
       json_object_object_add(jreply, "artists", json_object_new_int(fci.artist_count));
       json_object_object_add(jreply, "albums", json_object_new_int(fci.album_count));
+      json_object_object_add(jreply, "file_size", json_object_new_int64(fci.file_size));
     }
   else
     {
@@ -4163,6 +4164,7 @@ jsonapi_reply_library_count(struct httpd_request *hreq)
       json_object_object_add(jreply, "artists", json_object_new_int(fci.artist_count));
       json_object_object_add(jreply, "albums", json_object_new_int(fci.album_count));
       json_object_object_add(jreply, "db_playtime", json_object_new_int64((fci.length / 1000)));
+      json_object_object_add(jreply, "file_size", json_object_new_int64((fci.file_size)));
     }
   else
     {