diff --git a/util/shlib_wrap.sh.in b/util/shlib_wrap.sh.in
index 27a1e513c8..6c115ba725 100755
--- a/util/shlib_wrap.sh.in
+++ b/util/shlib_wrap.sh.in
@@ -1,5 +1,25 @@
 #!/bin/sh
 
+# To test this OpenSSL version's applications against another version's
+# shared libraries, simply set
+#
+#     OPENSSL_REGRESSION=/path/to/other/OpenSSL/build/tree
+if [ -n "$OPENSSL_REGRESSION" ]; then
+    shlibwrap="$OPENSSL_REGRESSION/util/shlib_wrap.sh"
+    if [ -x "$shlibwrap" ]; then
+        # We clear OPENSSL_REGRESSION to avoid a loop, should the shlib_wrap.sh
+        # we exec also support that mechanism...
+        OPENSSL_REGRESSION= exec "$shlibwrap" "$@"
+    else
+        if [ -f "$shlibwrap" ]; then
+            echo "Not permitted to run $shlibwrap" >&2
+        else
+            echo "No $shlibwrap, perhaps OPENSSL_REGRESSION isn't properly set?" >&2
+        fi
+        exit 1
+    fi
+fi
+
 [ $# -ne 0 ] || set -x		# debug mode without arguments:-)
 
 THERE="`echo $0 | sed -e 's|[^/]*$||' 2>/dev/null`.."