diff --git a/doc/debugging_with_gdb.html b/doc/debugging_with_gdb.html
index 633d058c11..dc8147806b 100644
--- a/doc/debugging_with_gdb.html
+++ b/doc/debugging_with_gdb.html
@@ -45,7 +45,7 @@ Pass the <code>'-w'</code> flag to the linker to omit the debug information
 The code generated by the <code>gc</code> compiler includes inlining of
 function invocations and registerization of variables. These optimizations
 can sometimes make debugging with <code>gdb</code> harder. To disable them
-when debugging, pass the flags <code>-gcflags "-N -l"</code> to the
+when debugging, pass the flags <code>-gcflags=all="-N -l"</code> to the
 <a href="/cmd/go"><code>go</code></a> command used to build the code being
 debugged.
 </p>