diff --git a/code/espurna/ifan.cpp b/code/espurna/ifan.cpp
index f796c721..7b9381c4 100644
--- a/code/espurna/ifan.cpp
+++ b/code/espurna/ifan.cpp
@@ -138,13 +138,12 @@ struct StatePins {
 private:
     // XXX: while these are hard-coded, we don't really benefit from having these in the hardware cfg
     bool _initialized { false };
-    Pins _pins{
+    Pins _pins{{
         Pin{5, nullptr},
         Pin{4, nullptr},
-        Pin{15, nullptr}
-    };
+        Pin{15, nullptr}}};
 
-    State _state {LOW, LOW, LOW};
+    State _state{{LOW, LOW, LOW}};
 };
 
 StatePins::State StatePins::state(FanSpeed speed) {
diff --git a/code/espurna/relay.cpp b/code/espurna/relay.cpp
index 1e1eb729..b6af41a3 100644
--- a/code/espurna/relay.cpp
+++ b/code/espurna/relay.cpp
@@ -511,7 +511,7 @@ void trigger(Duration duration, size_t id, bool target) {
         return;
     }
 
-    bool rescheduled { false };
+    bool rescheduled [[gnu::unused]] { false };
     auto it = find(id);
     if (it != internal::timers.end()) {
         (*it).update(duration, target);
diff --git a/code/scripts/test_build.py b/code/scripts/test_build.py
index 2b666798..6950564a 100755
--- a/code/scripts/test_build.py
+++ b/code/scripts/test_build.py
@@ -112,6 +112,12 @@ def main(args):
     configurations = []
     if not args.no_default:
         configurations = list(pathlib.Path(".").glob(args.default_configurations))
+        if args.start_from:
+            try:
+                offset = configurations.index(pathlib.Path(args.start_from))
+                configurations = configurations[offset:]
+            except ValueError:
+                pass
 
     if args.add:
         configurations.extend(args.add)
@@ -149,17 +155,26 @@ if __name__ == "__main__":
     )
 
     parser.add_argument("-e", "--environment", help="PIO environment")
+
     parser.add_argument(
         "--default-configurations",
         default="test/build/*.h",
         help="(glob) default configuration headers",
     )
+
+    parser.add_argument(
+        "--start-from",
+        help="When using default configuration, skip everything until this name",
+    )
+
     parser.add_argument(
         "--no-silent", action="store_true", help="Do not silence pio-run"
     )
+
     parser.add_argument(
         "--no-single-source", action="store_true", help="Disable 'unity' build"
     )
+
     parser.add_argument(
         "--no-build",
         action="store_true",