diff --git a/src/libs/qmleditorwidgets/contextpanewidgetimage.cpp b/src/libs/qmleditorwidgets/contextpanewidgetimage.cpp
index bcc79494038601f7854f23aba2623f6700943f9a..80d7b4d3a5b9e6211cb5d0e968f3f4f9c4b117ef 100644
--- a/src/libs/qmleditorwidgets/contextpanewidgetimage.cpp
+++ b/src/libs/qmleditorwidgets/contextpanewidgetimage.cpp
@@ -465,10 +465,10 @@ void ContextPaneWidgetImage::setPixmap(const QString &fileName)
         if (QFile(fileName).exists()) {
             if (fileName.endsWith(QLatin1String("sci"))) {
                 QString pixmapFileName;
-                int left;
-                int right;
-                int top;
-                int bottom;
+                int left = -1;
+                int right = -1;
+                int top = -1;
+                int bottom = -1;
                 Qt::TileRule horizontalTileRule;
                 Qt::TileRule verticalTileRule;
                 if (parseSciFile(fileName, pixmapFileName, left, right, top, bottom, horizontalTileRule, verticalTileRule)) {