diff --git a/glibc-temp-ibmldbl64.patch b/glibc-temp-ibmldbl64.patch
index 7d0418d..bc07046 100644
--- a/glibc-temp-ibmldbl64.patch
+++ b/glibc-temp-ibmldbl64.patch
@@ -1,3 +1,8 @@
+Temporary workaround until this GCC bug is fixed:
+
+  -mlong-double-64 should override a previous -mabi=ibmlongdouble
+  <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104208>
+
 diff --git a/sysdeps/ieee754/ldbl-opt/Makefile b/sysdeps/ieee754/ldbl-opt/Makefile
 index 1d01846476..0e06abf9f1 100644
 --- a/sysdeps/ieee754/ldbl-opt/Makefile