2 files changed, 4 insertions, 1 deletions
diff --git a/src/plugins/printsupport/cups/qcupsprintengine.cpp b/src/plugins/printsupport/cups/qcupsprintengine.cpp
index b0c78c66f3..7ca81986b4 100644
--- a/src/plugins/printsupport/cups/qcupsprintengine.cpp
+++ b/src/plugins/printsupport/cups/qcupsprintengine.cpp
@@ -224,7 +224,9 @@ void QCupsPrintEnginePrivate::closePrintDevice()
             it += 2;
         }
 
-        for (int c = 0; c < options.size(); ++c) {
+        const int numOptions = options.size();
+        cupsOptStruct.reserve(numOptions);
+        for (int c = 0; c < numOptions; ++c) {
             cups_option_t opt;
             opt.name = options[c].first.data();
             opt.value = options[c].second.data();
diff --git a/src/plugins/printsupport/cups/qcupsprintersupport.cpp b/src/plugins/printsupport/cups/qcupsprintersupport.cpp
index da8f369787..b257918acf 100644
--- a/src/plugins/printsupport/cups/qcupsprintersupport.cpp
+++ b/src/plugins/printsupport/cups/qcupsprintersupport.cpp
@@ -78,6 +78,7 @@ QStringList QCupsPrinterSupport::availablePrintDeviceIds() const
     QStringList list;
     cups_dest_t *dests;
     int count = cupsGetDests(&dests);
+    list.reserve(count);
     for (int i = 0; i < count; ++i) {
         QString printerId = QString::fromLocal8Bit(dests[i].name);
         if (dests[i].instance)