diff --git a/src/mape/cpp-handles/stub-handle.cpp b/src/mape/cpp-handles/stub-handle.cpp
index db6a962e9..fbe2ddefa 100644
--- a/src/mape/cpp-handles/stub-handle.cpp
+++ b/src/mape/cpp-handles/stub-handle.cpp
@@ -72,6 +72,7 @@ C4IDListChunk::~C4IDListChunk() {}
 C4DefGraphics::C4DefGraphics(C4Def*) {}
 void C4DefGraphics::Clear() {}
 
+void C4DefList::SortByPriority() {}
 void C4DefList::CallEveryDefinition() {}
 void C4DefList::ResetIncludeDependencies() {}
 bool C4DefList::DrawFontImage(const char* szImageTag, C4Facet& rTarget, C4DrawTransform* pTransform) { return false; }
diff --git a/src/script/C4ScriptStandalone.cpp b/src/script/C4ScriptStandalone.cpp
index c01827137..ed00a9fb4 100644
--- a/src/script/C4ScriptStandalone.cpp
+++ b/src/script/C4ScriptStandalone.cpp
@@ -27,6 +27,7 @@
 C4Def* C4DefList::GetByName(const StdStrBuf &) {return NULL;}
 C4Def * C4DefList::GetDef(int) {return 0;}
 int C4DefList::GetDefCount() {return 0;}
+void C4DefList::SortByPriority() {}
 void C4DefList::CallEveryDefinition() {}
 void C4DefList::ResetIncludeDependencies() {}