diff --git a/src/plugins/screencast/screencastutils.h b/src/plugins/screencast/screencastutils.h
index 4e03f760a4..fa6f887d51 100644
--- a/src/plugins/screencast/screencastutils.h
+++ b/src/plugins/screencast/screencastutils.h
@@ -41,6 +41,10 @@ static GLenum closestGLType(QImage::Format format)
 
 static void doGrabTexture(GLTexture *texture, QImage *target)
 {
+    if (texture->size() != target->size()) {
+        return;
+    }
+
     const auto context = OpenGlContext::currentContext();
     const QSize size = texture->size();
     const bool invertNeeded = context->isOpenGLES() ^ (texture->contentTransform() != OutputTransform::FlipY);