diff --git a/src/common/Array.hxx b/src/common/Array.hxx
index a33834ad5..691424432 100644
--- a/src/common/Array.hxx
+++ b/src/common/Array.hxx
@@ -58,6 +58,13 @@ class Array
         delete [] _data;
     }
 
+    void reserve(int capacity)
+    {
+      if(capacity <= _capacity)
+        return;
+      ensureCapacity(capacity - 128);
+    }
+
     void push_back(const T& element)
     {
       ensureCapacity(_size + 1);
diff --git a/src/debugger/CartDebug.cxx b/src/debugger/CartDebug.cxx
index fcb223096..763b9d8c5 100644
--- a/src/debugger/CartDebug.cxx
+++ b/src/debugger/CartDebug.cxx
@@ -278,6 +278,7 @@ bool CartDebug::fillDisassemblyList(BankInfo& info, bool resolvedata, uInt16 sea
   bool found = false;
 
   myDisassembly.list.clear();
+  myDisassembly.list.reserve(2048);
   myDisassembly.fieldwidth = 10 + myLabelLength;
   DiStella distella(*this, myDisassembly.list, info,
                     myDisLabels, myDisDirectives, resolvedata);
diff --git a/src/gui/LauncherDialog.cxx b/src/gui/LauncherDialog.cxx
index f217083dc..38bb3bdd2 100644
--- a/src/gui/LauncherDialog.cxx
+++ b/src/gui/LauncherDialog.cxx
@@ -345,6 +345,7 @@ void LauncherDialog::loadDirListing()
     return;
 
   FSList files;
+  files.reserve(1024);
   myCurrentNode.getChildren(files, FilesystemNode::kListAll);
 
   // Add '[..]' to indicate previous folder