diff --git a/profiles/package.mask b/profiles/package.mask
index 7ba7f5743370b..20ff7140c22ed 100644
--- a/profiles/package.mask
+++ b/profiles/package.mask
@@ -29,6 +29,11 @@
 
 #--- END OF EXAMPLES ---
 
+# Sergei Trofimovich <slyfox@gentoo.org> (2019-07-20)
+# Mask linux-headers-5.2 as it breaks at least firefox
+# and qemu. See bug #690296.
+>=sys-kernel/linux-headers-5.2
+
 # Hans de Graaff <graaff@gentoo.org> (2019-07-17)
 # Mask ruby24-only slots for removal in 30 days. These slots do not
 # have any reverse dependencies. Please migrate to or use a newer slot.