diff --git a/src/config.c b/src/config.c
index 81acfb2f..b3414ab2 100644
--- a/src/config.c
+++ b/src/config.c
@@ -713,7 +713,8 @@ config_modify_tag( htsmsg_t *c, uint32_t id, const char *uuid, const void *aux )
           htsmsg_add_msg(e, "tags_new", t);
           t = htsmsg_get_list(e, "tags_new");
         }
-        htsmsg_add_str(t, NULL, uuid);
+        if (t)
+          htsmsg_add_str(t, NULL, uuid);
       }
     }
   }
@@ -791,7 +792,9 @@ config_modify_dvr_log( htsmsg_t *c, uint32_t id, const char *uuid, const void *a
       HTSMSG_FOREACH(f, list) {
         if (!(e = htsmsg_field_get_map(f))) continue;
         if (strcmp(s1, htsmsg_get_str(e, "id") ?: "") == 0) {
-          htsmsg_add_str(c, "autorec", htsmsg_get_str(e, "uuid"));
+          const char *s2 = htsmsg_get_str(e, "uuid");
+          if (s2)
+            htsmsg_add_str(c, "autorec", s2);
           break;
         }
       }
@@ -877,6 +880,8 @@ config_find_uuid( htsmsg_t *map, const char *name, const char *value )
   htsmsg_field_t *f;
   const char *s;
 
+  if (!map || !name || !value)
+    return NULL;
   HTSMSG_FOREACH(f, map) {
     if (!(e = htsmsg_field_get_map(f))) continue;
     if ((s = htsmsg_get_str(e, name)) != NULL) {
diff --git a/src/dvr/dvr_db.c b/src/dvr/dvr_db.c
index bd77bf00..7cd635d4 100644
--- a/src/dvr/dvr_db.c
+++ b/src/dvr/dvr_db.c
@@ -1447,8 +1447,7 @@ dvr_entry_class_disp_title_set(void *o, const void *v)
   if (strcmp(s, v)) {
     lang_str_destroy(de->de_title);
     de->de_title = lang_str_create();
-    if (v)
-      lang_str_add(de->de_title, v, NULL, 0);
+    lang_str_add(de->de_title, v, NULL, 0);
     return 1;
   }
   return 0;
diff --git a/src/misc/dbl.c b/src/misc/dbl.c
index c31220f3..08bbdb89 100644
--- a/src/misc/dbl.c
+++ b/src/misc/dbl.c
@@ -228,9 +228,12 @@ my_double2str(char *buf, size_t bufsize, double realvalue)
       precision = precision - exp;
       xtype = xFLOAT;
     }
-  }else{
+  }
+#if 0 /* coverity - dead code - xtype == xGENERIC here */
+    else{
     flag_rtz = 0;
   }
+#endif
   if( xtype==xEXP ){
     e2 = 0;
   }else{
diff --git a/src/muxer/tvh/mkmux.c b/src/muxer/tvh/mkmux.c
index 045bad48..2699bdfa 100644
--- a/src/muxer/tvh/mkmux.c
+++ b/src/muxer/tvh/mkmux.c
@@ -656,14 +656,14 @@ _mk_build_metadata(const dvr_entry_t *de, const epg_broadcast_t *ebc)
   struct tm tm;
   localtime_r(de ? &de->de_start : &ebc->start, &tm);
   epg_episode_t *ee = NULL;
-  channel_t *ch;
+  channel_t *ch = NULL;
   lang_str_t *ls = NULL;
 
   if (ebc)                     ee = ebc->episode;
   else if (de && de->de_bcast) ee = de->de_bcast->episode;
 
-  if (de) ch = de->de_channel;
-  else    ch = ebc->channel;
+  if (de)       ch = de->de_channel;
+  else if (ebc) ch = ebc->channel;
 
   snprintf(datestr, sizeof(datestr),
 	   "%04d-%02d-%02d %02d:%02d:%02d",