diff --git a/firefox.spec b/firefox.spec
index 81a47ca..27bd850 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -615,6 +615,7 @@ echo "export RANLIB=\"gcc-ranlib\"" >> .mozconfig
 %if 0%{?build_with_pgo}
 echo "ac_add_options MOZ_PGO=1" >> .mozconfig
 # Temporary disabled due to GCC bug
+# Should be fixed in Firefox 83
 %if 0%{?fedora} < 33
 echo "ac_add_options --enable-lto" >> .mozconfig
 %endif