diff --git a/internal/server/token.go b/internal/server/token.go
index a02a884c..8d1afa1d 100644
--- a/internal/server/token.go
+++ b/internal/server/token.go
@@ -743,7 +743,7 @@ loop:
 			}
 			vsout = nvs
 		case tokenNOT:
-			negate = true
+			negate = !negate
 			needObj = true
 			vsout = nvs
 		case tokenAND:
diff --git a/tests/testcmd_test.go b/tests/testcmd_test.go
index 82d6a4c6..51c55da2 100644
--- a/tests/testcmd_test.go
+++ b/tests/testcmd_test.go
@@ -172,6 +172,10 @@ func testcmd_expression_test(mc *mockServer) error {
 		{"SET", "mykey", "line3", "OBJECT", `{"type":"LineString","coordinates":[[-122.4408378,37.7341129],[-122.4408378,37.733]]}`}, {"OK"},
 		{"SET", "mykey", "poly8", "OBJECT", poly8}, {"OK"},
 
+		{"TEST", "OBJECT", poly9, "INTERSECTS", "NOT", "OBJECT", poly}, {"0"},
+		{"TEST", "OBJECT", poly9, "INTERSECTS", "NOT", "NOT", "OBJECT", poly}, {"1"},
+		{"TEST", "OBJECT", poly9, "INTERSECTS", "NOT", "NOT", "NOT", "OBJECT", poly}, {"0"},
+
 		{"TEST", "OBJECT", poly9, "INTERSECTS", "OBJECT", poly8, "OR", "OBJECT", poly}, {"1"},
 		{"TEST", "OBJECT", poly9, "INTERSECTS", "OBJECT", poly8, "AND", "OBJECT", poly}, {"1"},
 		{"TEST", "OBJECT", poly9, "INTERSECTS", "GET", "mykey", "poly8", "OR", "OBJECT", poly}, {"1"},