diff --git a/interpreter.go b/interpreter.go
index 390d459b6..0c9dbc519 100644
--- a/interpreter.go
+++ b/interpreter.go
@@ -949,8 +949,16 @@ func jsonToValue(i *interpreter, v interface{}) (value, error) {
 
 	case bool:
 		return makeValueBoolean(v), nil
-	case int, int8, int16, int32, int64:
-		return makeDoubleCheck(i, v.(float64))
+	case int:
+		return makeDoubleCheck(i, float64(v))
+	case int8:
+		return makeDoubleCheck(i, float64(v))
+	case int16:
+		return makeDoubleCheck(i, float64(v))
+	case int32:
+		return makeDoubleCheck(i, float64(v))
+	case int64:
+		return makeDoubleCheck(i, float64(v))
 	case float64:
 		return makeDoubleCheck(i, v)