diff --git a/configure.ac b/configure.ac
index 80991f3866c..9d113be88d5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1798,7 +1798,6 @@ AS_IF([test $gl_gcc_warnings = no],
   nw="$nw -Wformat-overflow=2"      # False alarms due to GCC bug 110333
   nw="$nw -Woverlength-strings"     # Not a problem these days
   nw="$nw -Wvla"                    # Emacs uses <vla.h>.
-  nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
   nw="$nw -Winline"                 # OK to ignore 'inline'
   nw="$nw -Wstrict-overflow"        # OK to optimize assuming that
                                     # signed overflow has undefined behavior