diff --git a/changes/ticket30149 b/changes/ticket30149
new file mode 100644
index 0000000000..a21687ac2f
--- /dev/null
+++ b/changes/ticket30149
@@ -0,0 +1,3 @@
+  o Code simplification and refactoring:
+    - Add several assertions in an attempt to fix some Coverity warnings.
+      Closes ticket 30149.
diff --git a/scripts/maint/practracker/exceptions.txt b/scripts/maint/practracker/exceptions.txt
index 7d03bf27d6..ecc58012c6 100644
--- a/scripts/maint/practracker/exceptions.txt
+++ b/scripts/maint/practracker/exceptions.txt
@@ -218,7 +218,7 @@ problem include-count /src/feature/nodelist/networkstatus.c 61
 problem function-size /src/feature/nodelist/networkstatus.c:networkstatus_check_consensus_signature() 176
 problem function-size /src/feature/nodelist/networkstatus.c:networkstatus_set_current_consensus() 293
 problem function-size /src/feature/nodelist/node_select.c:router_pick_directory_server_impl() 123
-problem function-size /src/feature/nodelist/node_select.c:compute_weighted_bandwidths() 205
+problem function-size /src/feature/nodelist/node_select.c:compute_weighted_bandwidths() 206
 problem function-size /src/feature/nodelist/node_select.c:router_pick_trusteddirserver_impl() 114
 problem function-size /src/feature/nodelist/nodelist.c:compute_frac_paths_available() 193
 problem file-size /src/feature/nodelist/routerlist.c 3234
diff --git a/src/feature/client/circpathbias.c b/src/feature/client/circpathbias.c
index 1743ab5a81..e6af649ba7 100644
--- a/src/feature/client/circpathbias.c
+++ b/src/feature/client/circpathbias.c
@@ -176,6 +176,7 @@ pathbias_get_scale_threshold(const or_options_t *options)
 static double
 pathbias_get_scale_ratio(const or_options_t *options)
 {
+  (void) options;
   /*
    * The scale factor is the denominator for our scaling
    * of circuit counts for our path bias window.
@@ -185,7 +186,8 @@ pathbias_get_scale_ratio(const or_options_t *options)
    */
   int denominator = networkstatus_get_param(NULL, "pb_scalefactor",
                               2, 2, INT32_MAX);
-  (void) options;
+  tor_assert(denominator > 0);
+
   /**
    * The mult factor is the numerator for our scaling
    * of circuit counts for our path bias window. It
diff --git a/src/feature/nodelist/node_select.c b/src/feature/nodelist/node_select.c
index e31abb247f..93ddb066d4 100644
--- a/src/feature/nodelist/node_select.c
+++ b/src/feature/nodelist/node_select.c
@@ -585,6 +585,7 @@ compute_weighted_bandwidths(const smartlist_t *sl,
   }
 
   weight_scale = networkstatus_get_weight_scale_param(NULL);
+  tor_assert(weight_scale >= 1);
 
   if (rule == WEIGHT_FOR_GUARD) {
     Wg = networkstatus_get_bw_weight(NULL, "Wgg", -1);
diff --git a/src/feature/relay/onion_queue.c b/src/feature/relay/onion_queue.c
index 696905cf5e..c37745cf33 100644
--- a/src/feature/relay/onion_queue.c
+++ b/src/feature/relay/onion_queue.c
@@ -212,10 +212,12 @@ num_ntors_per_tap(void)
 #define MIN_NUM_NTORS_PER_TAP 1
 #define MAX_NUM_NTORS_PER_TAP 100000
 
-  return networkstatus_get_param(NULL, "NumNTorsPerTAP",
-                                 DEFAULT_NUM_NTORS_PER_TAP,
-                                 MIN_NUM_NTORS_PER_TAP,
-                                 MAX_NUM_NTORS_PER_TAP);
+  int result = networkstatus_get_param(NULL, "NumNTorsPerTAP",
+                                       DEFAULT_NUM_NTORS_PER_TAP,
+                                       MIN_NUM_NTORS_PER_TAP,
+                                       MAX_NUM_NTORS_PER_TAP);
+  tor_assert(result > 0);
+  return result;
 }
 
 /** Choose which onion queue we'll pull from next. If one is empty choose
diff --git a/src/lib/math/prob_distr.h b/src/lib/math/prob_distr.h
index 2eb935e4a8..8fccf8d015 100644
--- a/src/lib/math/prob_distr.h
+++ b/src/lib/math/prob_distr.h
@@ -53,7 +53,7 @@ struct dist {
  *  We define this conditionally to suppress false positives from
  *  Coverity, which gets confused by the sizeof business.
  */
-#ifdef __COVERITY___
+#ifdef __COVERITY__
 #define TYPE_CHECK_OBJ(OPS, OBJ, TYPE) 0
 #else
 #define TYPE_CHECK_OBJ(OPS, OBJ, TYPE) \