diff --git a/main/data/theme.css b/main/data/theme.css
index 94cf1da5..b689d96c 100644
--- a/main/data/theme.css
+++ b/main/data/theme.css
@@ -386,6 +386,6 @@ box.dino-input-error .chat-input-status.input-status-highlight-once {
     box-shadow: 0 0 2px 0 rgba(0,0,0,0.5);
 }
 
-.qrcode-container {
+.qrcode-container > contents {
     background: white;  /* Color of the quiet zone. MUST have the same "reflectance" as light modules of the QR code. */
 }
diff --git a/plugins/omemo/src/ui/contact_details_dialog.vala b/plugins/omemo/src/ui/contact_details_dialog.vala
index ab216c58..2de28572 100644
--- a/plugins/omemo/src/ui/contact_details_dialog.vala
+++ b/plugins/omemo/src/ui/contact_details_dialog.vala
@@ -104,9 +104,9 @@ public class ContactDetailsDialog : Gtk.Dialog {
 
             const int QUIET_ZONE_MODULES = 4;  // MUST be at least 4
             const int MODULE_SIZE_PX = 4;  // arbitrary
-            var qr_pixbuf = new QRcode(iri, 2)
-                .to_pixbuf(MODULE_SIZE_PX * qrcode_image.scale_factor);
-            qrcode_image.set_from_pixbuf(qr_pixbuf);
+            var qr_paintable = new QRcode(iri, 2)
+                .to_paintable(MODULE_SIZE_PX * qrcode_image.scale_factor);
+            qrcode_image.paintable = qr_paintable;
             qrcode_image.margin_top = qrcode_image.margin_end =
                     qrcode_image.margin_bottom = qrcode_image.margin_start = QUIET_ZONE_MODULES*MODULE_SIZE_PX;
             qrcode_popover.add_css_class("qrcode-container");
diff --git a/plugins/omemo/vapi/libqrencode.vapi b/plugins/omemo/vapi/libqrencode.vapi
index 79f98b62..360f74a5 100644
--- a/plugins/omemo/vapi/libqrencode.vapi
+++ b/plugins/omemo/vapi/libqrencode.vapi
@@ -1,5 +1,3 @@
-using Gdk;
-
 [CCode (cheader_filename = "qrencode.h")]
 namespace Qrencode {
 
@@ -36,13 +34,14 @@ namespace Qrencode {
         [CCode (cname = "QRcode_encodeString")]
         public QRcode (string str, int version = 0, ECLevel level = ECLevel.L, EncodeMode hint = EncodeMode.EIGHT_BIT, bool casesensitive = true);
 
-        public Pixbuf to_pixbuf(int module_size) {
+        public Gdk.Paintable to_paintable(int module_size) {
             GLib.assert(module_size > 0);
             var dst_width = width*module_size;
             var dst_data  = new uint8[dst_width*dst_width*3];
             expand_and_upsample(data,width,width, dst_data,dst_width,dst_width);
-            return new Pixbuf.from_data(dst_data,
-                Colorspace.RGB, false, 8, dst_width, dst_width, dst_width*3);
+            return new Gdk.MemoryTexture(dst_width, dst_width, Gdk.MemoryFormat.R8G8B8,
+                    new GLib.Bytes.take((owned) dst_data), dst_width*3);
+
         }
 
         /**  Does 2D nearest-neighbor upsampling of an array of single-byte