diff --git a/src/cmd/5g/doc.go b/src/cmd/5g/doc.go
index e86013bdd78..5a4a772fb44 100644
--- a/src/cmd/5g/doc.go
+++ b/src/cmd/5g/doc.go
@@ -9,7 +9,5 @@ The $GOARCH for these tools is arm.
 
 It reads .go files and outputs .5 files. The flags are documented in ../gc/doc.go.
 
-There is no instruction optimizer, so the -N flag is a no-op.
-
 */
 package documentation
diff --git a/src/cmd/8g/doc.go b/src/cmd/8g/doc.go
index 2d9ff9a4273..6d678eac8bf 100644
--- a/src/cmd/8g/doc.go
+++ b/src/cmd/8g/doc.go
@@ -9,7 +9,5 @@ The $GOARCH for these tools is 386.
 
 It reads .go files and outputs .8 files. The flags are documented in ../gc/doc.go.
 
-There is no instruction optimizer, so the -N flag is a no-op.
-
 */
 package documentation