diff --git a/src/symtab.c b/src/symtab.c
index 14c672b6..dd2a3d53 100644
--- a/src/symtab.c
+++ b/src/symtab.c
@@ -309,9 +309,12 @@ complain_class_redeclared (symbol *sym, symbol_class class, location second)
                    class == token_sym
                    ? _("symbol %s redeclared as a token")
                    : _("symbol %s redeclared as a nonterminal"), sym->tag);
-  i += SUB_INDENT;
-  complain_indent (&sym->location, complaint, &i,
-                   _("previous definition"));
+  if (!location_empty (sym->location))
+    {
+      i += SUB_INDENT;
+      complain_indent (&sym->location, complaint, &i,
+                       _("previous definition"));
+    }
 }
 
 
diff --git a/tests/input.at b/tests/input.at
index 312aa5a9..70c0cecc 100644
--- a/tests/input.at
+++ b/tests/input.at
@@ -625,6 +625,7 @@ AT_DATA([[input.y]],
 [[%token FOO
 %nterm FOO BAR
 %token BAR
+%nterm error // The token error cannot be redefined as an nterm.
 %%
 FOO: BAR
 BAR:
@@ -643,7 +644,10 @@ input.y:3.8-10: error: symbol BAR redeclared as a token
 input.y:2.12-14:    previous definition
  %nterm FOO BAR
             ^~~
-input.y:5.1-3: error: rule given for FOO, which is a token
+input.y:4.8-12: error: symbol error redeclared as a nonterminal
+ %nterm error // The token error cannot be redefined as an nterm.
+        ^~~~~
+input.y:6.1-3: error: rule given for FOO, which is a token
  FOO: BAR
  ^~~
 ]])