diff --git a/docs/manual/known-issues.txt b/docs/manual/known-issues.txt
index ae29a48b38..616430b91c 100644
--- a/docs/manual/known-issues.txt
+++ b/docs/manual/known-issues.txt
@@ -7,7 +7,7 @@
   if such options contain a +$+ sign. For example, the following is known
   to break: +BR2_TARGET_LDFLAGS="-Wl,-rpath=\'$ORIGIN/../lib'"+
 
-* The +libffi+ package is not supported on the SuperH 2 and ARC
+* The +libffi+ package is not supported on the SuperH 2, nds32, and ARMv7-M
   architectures.
 
 * The +prboom+ package triggers a compiler failure with the SuperH 4