diff --git a/configure.pri b/configure.pri
index 09c34af4ee2..b109192bebb 100644
--- a/configure.pri
+++ b/configure.pri
@@ -835,9 +835,6 @@ defineTest(qtConfOutput_preparePaths) {
     addConfStr($$[QMAKE_SPEC])
 
     $${currentConfig}.output.qconfigSource = \
-        "/* Installation date */" \
-        "static const char qt_configure_installation     [12+11]  = \"qt_instdate=2012-12-20\";" \
-        "" \
         "/* Installation Info */" \
         "static const char qt_configure_prefix_path_str  [12+256] = \"qt_prfxpath=$$config.input.prefix\";" \
         "$${LITERAL_HASH}ifdef QT_BUILD_QMAKE" \
diff --git a/src/corelib/global/qlibraryinfo.cpp b/src/corelib/global/qlibraryinfo.cpp
index c0a5369cdd7..5634d6e6c3e 100644
--- a/src/corelib/global/qlibraryinfo.cpp
+++ b/src/corelib/global/qlibraryinfo.cpp
@@ -274,7 +274,7 @@ QLibraryInfo::licensedProducts()
 QDate
 QLibraryInfo::buildDate()
 {
-    return QDate::fromString(QString::fromLatin1(qt_configure_installation + 12), Qt::ISODate);
+    return QDate::fromString(QString::fromLatin1("2012-12-20"), Qt::ISODate);
 }
 #endif
 #endif // datestring