diff --git a/bundle/regal/rules/style/unnecessary_some.rego b/bundle/regal/rules/style/unnecessary_some.rego
index 624ba41d..ec120d8c 100644
--- a/bundle/regal/rules/style/unnecessary_some.rego
+++ b/bundle/regal/rules/style/unnecessary_some.rego
@@ -17,12 +17,14 @@ report contains violation if {
 
 	walk(rule, [_, value])
 
-	value[0].type == "call"
-	value[0].value[0].type == "ref"
+	symbols := value.symbols
 
-	some_is_unnecessary(value)
+	symbols[0].type == "call"
+	symbols[0].value[0].type == "ref"
 
-	violation := result.fail(rego.metadata.chain(), result.location(value))
+	some_is_unnecessary(symbols)
+
+	violation := result.fail(rego.metadata.chain(), result.location(symbols))
 }
 
 some_is_unnecessary(value) if {
diff --git a/bundle/regal/rules/style/unnecessary_some_test.rego b/bundle/regal/rules/style/unnecessary_some_test.rego
index caebe3e8..134504a9 100644
--- a/bundle/regal/rules/style/unnecessary_some_test.rego
+++ b/bundle/regal/rules/style/unnecessary_some_test.rego
@@ -82,3 +82,10 @@ test_success_some_key_value_using_var_for_key if {
 	r := rule.report with input as module
 	r == set()
 }
+
+test_success_just_in_head if {
+	module := ast.with_future_keywords(`rule := [1 in []]`)
+
+	r := rule.report with input as module
+	r == set()
+}