diff --git a/include/common/qvec.hh b/include/common/qvec.hh
index 7a957925..48ce3c02 100644
--- a/include/common/qvec.hh
+++ b/include/common/qvec.hh
@@ -754,7 +754,7 @@ public:
     }
 
     // access row
-    [[nodiscard]] constexpr qvec<T, NCol> row(size_t row) const
+    [[nodiscard]] inline qvec<T, NCol> row(size_t row) const
     {
         assert(row >= 0 && row < NRow);
         qvec<T, NCol> v;
@@ -764,7 +764,7 @@ public:
         return v;
     }
 
-    void set_row(size_t row, const qvec<T, NCol> &values)
+    inline void set_row(size_t row, const qvec<T, NCol> &values)
     {
         for (size_t i = 0; i < NCol; i++) {
             at(row, i) = values[i];
@@ -777,7 +777,7 @@ public:
         return reinterpret_cast<const qvec<T, NRow> &>(m_values[col * NRow]);
     }
 
-    void set_col(size_t col, const qvec<T, NRow> &values) const
+    inline void set_col(size_t col, const qvec<T, NRow> &values) const
     {
         reinterpret_cast<qvec<T, NRow> &>(m_values[col * NRow]) = values;
     }
diff --git a/include/light/settings.hh b/include/light/settings.hh
index 0bce1bed..6a1ea018 100644
--- a/include/light/settings.hh
+++ b/include/light/settings.hh
@@ -124,7 +124,7 @@ public:
 class lockable_bool_t : public lockable_setting_t
 {
 private:
-    [[maybe_unused]] bool _default, _value;
+    bool _value;
 
     void setBoolValueInternal(bool f, setting_source_t newsource)
     {
@@ -153,7 +153,7 @@ public:
 
     virtual std::string stringValue() const { return _value ? "1" : "0"; }
 
-    lockable_bool_t(std::vector<std::string> names, bool v) : lockable_setting_t(names), _default(v), _value(v) { }
+    lockable_bool_t(std::vector<std::string> names, bool v) : lockable_setting_t(names), _value(v) { }
 
     lockable_bool_t(std::string name, bool v) : lockable_bool_t(std::vector<std::string>{name}, v) { }
 };
@@ -161,7 +161,7 @@ public:
 class lockable_vec_t : public lockable_setting_t
 {
 private:
-    [[maybe_unused]] vec_t _default, _value, _min, _max;
+    vec_t _value, _min, _max;
 
     inline void setFloatInternal(vec_t f, setting_source_t newsource)
     {
@@ -212,7 +212,7 @@ public:
 
     lockable_vec_t(std::vector<std::string> names, vec_t v, vec_t minval = -std::numeric_limits<vec_t>::infinity(),
         vec_t maxval = std::numeric_limits<vec_t>::infinity())
-        : lockable_setting_t(names), _default(v), _value(v), _min(minval), _max(maxval)
+        : lockable_setting_t(names), _value(v), _min(minval), _max(maxval)
     {
         // check the default value is valid
         Q_assert(_min < _max);
@@ -230,7 +230,7 @@ public:
 class lockable_string_t : public lockable_setting_t
 {
 private:
-    std::string _default, _value;
+    std::string _value;
 
 public:
     virtual void setStringValue(const std::string &str, bool locked = false)
@@ -242,7 +242,7 @@ public:
 
     virtual std::string stringValue() const { return _value; }
 
-    lockable_string_t(std::vector<std::string> names, std::string v) : lockable_setting_t(names), _default(v), _value(v)
+    lockable_string_t(std::vector<std::string> names, std::string v) : lockable_setting_t(names), _value(v)
     {
     }