diff --git a/docs/known-issues.txt b/docs/known-issues.txt
index 3c7eaab5..80d7646a 100644
--- a/docs/known-issues.txt
+++ b/docs/known-issues.txt
@@ -44,9 +44,12 @@ Explanations:
   x86 and for x86_64.
 
   Only the system part of the tuple (here, linux-gnu) needs to be the same to
-  trigger the bug. Which means that building a tolchain for either x86 or
+  trigger the bug. Which means that building a toolchain for either x86 or
   x86_64 on either x86 or x86_64 breaks.
 
+  Typically, it is not possible to build the i686-nptl-linux-gnu sample on an
+  x86_64 machine, although it might build on an x86 machine.
+
 Fix:
   None known.
 
diff --git a/samples/i686-nptl-linux-gnu/broken b/samples/i686-nptl-linux-gnu/broken
new file mode 100644
index 00000000..e69de29b