diff --git a/src/cmd/ksh93/bltins/whence.c b/src/cmd/ksh93/bltins/whence.c
index 35b09aeed..300194c12 100644
--- a/src/cmd/ksh93/bltins/whence.c
+++ b/src/cmd/ksh93/bltins/whence.c
@@ -250,8 +250,6 @@ static int whence(Shell_t *shp,char **argv, register int flags)
 							const char *command_path = np->nvalue.pathcomp->name;
 							sfprintf(sfstdout,"%s %s %s/%s\n",name,sh_translate(is_talias),command_path,cp);
 						}
-						else if(!np || nv_isnull(np))
-							sfprintf(sfstdout,"%s%s\n",name,sh_translate(is_ufunction));
 						continue;
 					}
 					sfputr(sfstdout,sh_fmtq(name),' ');
diff --git a/src/cmd/ksh93/tests/builtins.sh b/src/cmd/ksh93/tests/builtins.sh
index fbc658a65..b9d9e297c 100755
--- a/src/cmd/ksh93/tests/builtins.sh
+++ b/src/cmd/ksh93/tests/builtins.sh
@@ -732,20 +732,27 @@ foo=BUG command eval ':'
 [[ $foo == BUG ]] && err_exit '`command` fails to disable the special properties of special builtins'
 
 # ======
-# `whence -a` should not base the path of tracked aliases on the current directory
-run_whence()
-{
-	whence -a chmod >> /dev/null
+# 'whence -a' tests
+
+# wrong path to tracked aliases after loading builtin: https://github.com/ksh93/ksh/pull/25
+actual=$("$SHELL" -c '
+	whence chmod >/dev/null  # add to hash table (create tracked alias)
 	builtin chmod
 	whence -a chmod
-}
-actual="$(run_whence)"
+')
 expected="chmod is a shell builtin
 $(whence -a -p chmod | sed 's/^/chmod is /')
 chmod is a tracked alias for $(whence -p chmod)"
 [[ $actual == $expected ]] || err_exit "'whence -a' does not work correctly with tracked aliases" \
 	"(expected $(printf %q "$expected"), got $(printf %q "$actual"))"
 
+# spurious 'undefined function' message: https://github.com/ksh93/ksh/issues/26
+actual=$("$SHELL" -c 'whence -a printf')
+expected="printf is a shell builtin
+$(whence -a -p printf | sed 's/^/printf is /')"
+[[ $actual == $expected ]] || err_exit "'whence -a': incorrect output" \
+	"(expected $(printf %q "$expected"), got $(printf %q "$actual"))"
+
 # ======
 # 'cd ../.foo' should not exclude the '.' in '.foo'
 (