diff --git a/linux/keyman-config/km-config b/linux/keyman-config/km-config
index 641fb96470..e099c59eda 100755
--- a/linux/keyman-config/km-config
+++ b/linux/keyman-config/km-config
@@ -2,6 +2,7 @@
 
 import argparse
 import logging
+import os
 import sys
 import gi
 
@@ -66,6 +67,10 @@ if __name__ == '__main__':
     elif args.url:
         download_and_install_package(args.url)
     else:
+        # Workaround for bug in webkit2gtk (#12587)
+        if not 'WEBKIT_DISABLE_DMABUF_RENDERER' in os.environ:
+            os.environ['WEBKIT_DISABLE_DMABUF_RENDERER'] = '1'
+
         w = ViewInstalledWindow()
         try:
             w.run()