diff --git a/src/kiconengine.cpp b/src/kiconengine.cpp
--- a/src/kiconengine.cpp
+++ b/src/kiconengine.cpp
@@ -84,7 +84,7 @@
 {
     Q_UNUSED(state)
 
-    if (!size.isValid()) {
+    if (size.isEmpty()) {
         return QPixmap();
     }