diff --git a/src/blackmisc/aviation/aircrafticaocodelist.cpp b/src/blackmisc/aviation/aircrafticaocodelist.cpp
index fcccbc7c3..45bf79dc8 100644
--- a/src/blackmisc/aviation/aircrafticaocodelist.cpp
+++ b/src/blackmisc/aviation/aircrafticaocodelist.cpp
@@ -18,6 +18,9 @@ namespace BlackMisc
 {
     namespace Aviation
     {
+        CAircraftIcaoCodeList::CAircraftIcaoCodeList()
+        { }
+
         CAircraftIcaoCodeList::CAircraftIcaoCodeList(const CSequence<CAircraftIcaoCode> &other) :
             CSequence<CAircraftIcaoCode>(other)
         { }
diff --git a/src/blackmisc/aviation/aircrafticaocodelist.h b/src/blackmisc/aviation/aircrafticaocodelist.h
index 3b02b15c0..5d27be714 100644
--- a/src/blackmisc/aviation/aircrafticaocodelist.h
+++ b/src/blackmisc/aviation/aircrafticaocodelist.h
@@ -40,7 +40,7 @@ namespace BlackMisc
             BLACKMISC_DECLARE_USING_MIXIN_METATYPE(CAircraftIcaoCodeList)
 
             //! Default constructor.
-            CAircraftIcaoCodeList() = default;
+            CAircraftIcaoCodeList();
 
             //! Construct from a base class object.
             CAircraftIcaoCodeList(const CSequence<CAircraftIcaoCode> &other);
diff --git a/src/blackmisc/aviation/airlineicaocodelist.cpp b/src/blackmisc/aviation/airlineicaocodelist.cpp
index d6cca2350..e0e7c7de6 100644
--- a/src/blackmisc/aviation/airlineicaocodelist.cpp
+++ b/src/blackmisc/aviation/airlineicaocodelist.cpp
@@ -18,6 +18,9 @@ namespace BlackMisc
 {
     namespace Aviation
     {
+        CAirlineIcaoCodeList::CAirlineIcaoCodeList()
+        { }
+
         CAirlineIcaoCodeList::CAirlineIcaoCodeList(const CSequence<CAirlineIcaoCode> &other) :
             CSequence<CAirlineIcaoCode>(other)
         { }
diff --git a/src/blackmisc/aviation/airlineicaocodelist.h b/src/blackmisc/aviation/airlineicaocodelist.h
index d313d9c11..f8d57d7e3 100644
--- a/src/blackmisc/aviation/airlineicaocodelist.h
+++ b/src/blackmisc/aviation/airlineicaocodelist.h
@@ -41,7 +41,7 @@ namespace BlackMisc
             BLACKMISC_DECLARE_USING_MIXIN_METATYPE(CAirlineIcaoCodeList)
 
             //! Default constructor.
-            CAirlineIcaoCodeList() = default;
+            CAirlineIcaoCodeList();
 
             //! Construct from a base class object.
             CAirlineIcaoCodeList(const CSequence<CAirlineIcaoCode> &other);
diff --git a/src/blackmisc/countrylist.cpp b/src/blackmisc/countrylist.cpp
index 93d7ecd52..10fcd9105 100644
--- a/src/blackmisc/countrylist.cpp
+++ b/src/blackmisc/countrylist.cpp
@@ -16,6 +16,8 @@
 
 namespace BlackMisc
 {
+    CCountryList::CCountryList() {}
+
     CCountryList::CCountryList(const CSequence<CCountry> &other) :
         CSequence<CCountry>(other)
     { }
diff --git a/src/blackmisc/countrylist.h b/src/blackmisc/countrylist.h
index 4eafcba1f..6922d83a8 100644
--- a/src/blackmisc/countrylist.h
+++ b/src/blackmisc/countrylist.h
@@ -38,7 +38,7 @@ namespace BlackMisc
         BLACKMISC_DECLARE_USING_MIXIN_METATYPE(CCountryList)
 
         //! Default constructor.
-        CCountryList() = default;
+        CCountryList();
 
         //! Construct from a base class object.
         CCountryList(const CSequence<CCountry> &other);
diff --git a/src/blackmisc/db/dbinfolist.cpp b/src/blackmisc/db/dbinfolist.cpp
index 589024b8f..6e7ce8751 100644
--- a/src/blackmisc/db/dbinfolist.cpp
+++ b/src/blackmisc/db/dbinfolist.cpp
@@ -15,6 +15,8 @@ namespace BlackMisc
 {
     namespace Db
     {
+        CDbInfoList::CDbInfoList() { }
+
         CDbInfoList::CDbInfoList(const CSequence<CDbInfo> &other) :
             CSequence<CDbInfo>(other)
         { }
diff --git a/src/blackmisc/db/dbinfolist.h b/src/blackmisc/db/dbinfolist.h
index 5cf618ed9..d01e39399 100644
--- a/src/blackmisc/db/dbinfolist.h
+++ b/src/blackmisc/db/dbinfolist.h
@@ -35,7 +35,7 @@ namespace BlackMisc
             BLACKMISC_DECLARE_USING_MIXIN_METATYPE(CDbInfoList)
 
             //! Default constructor.
-            CDbInfoList() = default;
+            CDbInfoList();
 
             //! Construct from a base class object.
             CDbInfoList(const CSequence<CDbInfo> &other);