diff --git a/plugins/experimental/access_control/plugin.cc b/plugins/experimental/access_control/plugin.cc
index 3b2ad4e27e4..a71f1b6e8cd 100644
--- a/plugins/experimental/access_control/plugin.cc
+++ b/plugins/experimental/access_control/plugin.cc
@@ -77,7 +77,6 @@ getEventName(TSEvent event)
   default:
     return "UNHANDLED";
   }
-  return "UNHANDLED";
 }
 
 /**
diff --git a/plugins/experimental/cache_fill/cache_fill.cc b/plugins/experimental/cache_fill/cache_fill.cc
index 151cb8bb748..a3be30c675d 100644
--- a/plugins/experimental/cache_fill/cache_fill.cc
+++ b/plugins/experimental/cache_fill/cache_fill.cc
@@ -60,7 +60,6 @@ getCacheLookupResultName(TSCacheLookupResult result)
     return "UNKNOWN_CACHE_LOOKUP_EVENT";
     break;
   }
-  return "UNKNOWN_CACHE_LOOKUP_EVENT";
 }
 
 ///////////////////////////////////////////////////////////////////////////
diff --git a/plugins/healthchecks/healthchecks.cc b/plugins/healthchecks/healthchecks.cc
index 77a69b13164..a86e6451c5d 100644
--- a/plugins/healthchecks/healthchecks.cc
+++ b/plugins/healthchecks/healthchecks.cc
@@ -211,6 +211,7 @@ hc_thread(void *data ATS_UNUSED)
     if (len >= 0) {
       int i = 0;
 
+      /* coverity[ -tainted_data] */
       while (i < len) {
         struct inotify_event *event = (struct inotify_event *)&buffer[i];
         HCFileInfo *finfo           = g_config;
diff --git a/plugins/prefetch/plugin.cc b/plugins/prefetch/plugin.cc
index fde298ec67e..6b731bdd257 100644
--- a/plugins/prefetch/plugin.cc
+++ b/plugins/prefetch/plugin.cc
@@ -76,7 +76,6 @@ getEventName(TSEvent event)
   default:
     return "UNHANDLED";
   }
-  return "UNHANDLED";
 }
 
 static const char *
@@ -99,7 +98,6 @@ getCacheLookupResultName(TSCacheLookupResult result)
     return "UNKNOWN_CACHE_LOOKUP_EVENT";
     break;
   }
-  return "UNKNOWN_CACHE_LOOKUP_EVENT";
 }
 
 /**