diff --git a/src/main/java/com/squareup/javapoet/TypeSpec.java b/src/main/java/com/squareup/javapoet/TypeSpec.java
index 44d9bc9..2296129 100644
--- a/src/main/java/com/squareup/javapoet/TypeSpec.java
+++ b/src/main/java/com/squareup/javapoet/TypeSpec.java
@@ -610,7 +610,7 @@ public Builder addSuperinterface(Type superinterface, boolean avoidNestedTypeNam
     public Builder addPermits(Iterable<? extends TypeName> permits) {
       checkArgument(permits != null, "permits == null");
       for (TypeName permit : permits) {
-        addPermits(permits);
+        addPermits(permit);
       }
       return this;
     }