diff --git a/CHANGES b/CHANGES
index 9c900b44f0..1fda6c1ac5 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+3854.	[cleanup]	Report unrecognized options, if any, in the final
+                        configure summary. [RT #36014]
+
 3853.	[cleanup]	Refactor dns_rdataslab_fromrdataset to seperate out
 			the handling of a rdataset with no records. [RT #35968]
 
diff --git a/configure b/configure
index 9aa016dafe..75e69e74c1 100755
--- a/configure
+++ b/configure
@@ -24079,6 +24079,11 @@ test "X$PYTHON" = "X" && echo "    Python tools (--with-python)"
 test "X$libxml2_libs" = "X" && echo "    XML statistics (--with-libxml2)"
 test "X$have_libjson" = "X" && echo "    JSON statistics (--with-libjson)"
 
+if test "X$ac_unrecognized_opts" != "X"; then
+    echo
+    echo "Unrecognized options:"
+    echo "    $ac_unrecognized_opts"
+fi
 echo "========================================================================"
 
 if test "X$CRYPTO" = "X"; then
diff --git a/configure.in b/configure.in
index d008b0079b..5913a324e0 100644
--- a/configure.in
+++ b/configure.in
@@ -4662,6 +4662,11 @@ test "X$PYTHON" = "X" && echo "    Python tools (--with-python)"
 test "X$libxml2_libs" = "X" && echo "    XML statistics (--with-libxml2)"
 test "X$have_libjson" = "X" && echo "    JSON statistics (--with-libjson)"
 
+if test "X$ac_unrecognized_opts" != "X"; then
+    echo
+    echo "Unrecognized options:"
+    echo "    $ac_unrecognized_opts"
+fi
 echo "========================================================================"
 
 if test "X$CRYPTO" = "X"; then