diff --git a/toolchain/Config.in b/toolchain/Config.in
index 87d7bc30bb..c4f333d599 100644
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -124,6 +124,12 @@ config BR2_TOOLCHAIN_HAS_GCC_BUG_64735
 	default y if !BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS && \
 		!BR2_TOOLCHAIN_GCC_AT_LEAST_7
 
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68485. This bug still
+# exists in gcc 9.x
+config BR2_TOOLCHAIN_HAS_GCC_BUG_68485
+	bool
+	default y if BR2_microblaze
+
 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85180. This bug no
 # longer exists in gcc 8.x.
 config BR2_TOOLCHAIN_HAS_GCC_BUG_85180