diff --git a/Make b/Make
index ee4f266851..b18be7769c 100755
--- a/Make
+++ b/Make
@@ -56,7 +56,7 @@ do
 	)
 done
 
-Wall="-Wall -Wdeclaration-after-statement -Wno-format-zero-length${Wall+ $Wall}"
+Wall="-Wall -Wvla -Wdeclaration-after-statement -Wno-format-zero-length${Wall+ $Wall}"
 tests= jobs= skip= oldtest= with_dash=
 
 case `uname` in