diff --git a/parse.y b/parse.y
index 189731b45c..d7261a008d 100644
--- a/parse.y
+++ b/parse.y
@@ -11758,6 +11758,7 @@ cond0(struct parser_params *p, NODE *node, enum cond_type type, const YYLTYPE *l
 	break;
 
       case NODE_DSYM:
+      warn_symbol:
 	SWITCH_BY_COND_TYPE(type, warning, "symbol ")
 	break;
 
@@ -11770,6 +11771,9 @@ cond0(struct parser_params *p, NODE *node, enum cond_type type, const YYLTYPE *l
 		 node->nd_lit == Qfalse) {
 	    /* booleans are OK, e.g., while true */
 	}
+	else if (SYMBOL_P(node->nd_lit)) {
+	    goto warn_symbol;
+	}
 	else {
 	    SWITCH_BY_COND_TYPE(type, warning, "")
 	}
diff --git a/test/ruby/test_syntax.rb b/test/ruby/test_syntax.rb
index bf59ee5379..667eb205dc 100644
--- a/test/ruby/test_syntax.rb
+++ b/test/ruby/test_syntax.rb
@@ -1061,16 +1061,16 @@ eom
   end
 
   def test_warning_literal_in_condition
-    assert_warn(/literal in condition/) do
+    assert_warn(/string literal in condition/) do
       eval('1 if ""')
     end
-    assert_warn(/literal in condition/) do
+    assert_warn(/regex literal in condition/) do
       eval('1 if //')
     end
     assert_warning(/literal in condition/) do
       eval('1 if 1')
     end
-    assert_warning(/literal in condition/) do
+    assert_warning(/symbol literal in condition/) do
       eval('1 if :foo')
     end
     assert_warning(/symbol literal in condition/) do