diff --git a/subprojects/gst-plugins-good/ext/qt6/gstqsg6material.cc b/subprojects/gst-plugins-good/ext/qt6/gstqsg6material.cc
index b2aa8823a7..d8f9493f08 100644
--- a/subprojects/gst-plugins-good/ext/qt6/gstqsg6material.cc
+++ b/subprojects/gst-plugins-good/ext/qt6/gstqsg6material.cc
@@ -516,6 +516,7 @@ video_format_to_rhi_format (GstVideoFormat format, guint plane)
   switch (format) {
     case GST_VIDEO_FORMAT_RGBA:
     case GST_VIDEO_FORMAT_BGRA:
+    case GST_VIDEO_FORMAT_RGB:
       return QRhiTexture::RGBA8;
     case GST_VIDEO_FORMAT_YV12:
       return QRhiTexture::R8;
@@ -532,6 +533,7 @@ video_format_to_texel_size (GstVideoFormat format, guint plane)
   switch (format) {
     case GST_VIDEO_FORMAT_RGBA:
     case GST_VIDEO_FORMAT_BGRA:
+    case GST_VIDEO_FORMAT_RGB:
       return 4;
     case GST_VIDEO_FORMAT_YV12:
       return 1;