diff --git a/modules/swagger-compat-spec-parser/src/main/java/io/swagger/parser/SwaggerCompatConverter.java b/modules/swagger-compat-spec-parser/src/main/java/io/swagger/parser/SwaggerCompatConverter.java
index ac28712d79..16a2a76904 100644
--- a/modules/swagger-compat-spec-parser/src/main/java/io/swagger/parser/SwaggerCompatConverter.java
+++ b/modules/swagger-compat-spec-parser/src/main/java/io/swagger/parser/SwaggerCompatConverter.java
@@ -210,7 +210,7 @@ public ResourceListing readResourceListing(String input, MessageBuilder messages
                 jsonNode = Json.mapper().readTree(json);
 
             }
-            if (jsonNode.get("swaggerVersion") == null) {
+            if (jsonNode == null || jsonNode.get("swaggerVersion") == null) {
                 return null;
             }
             ResourceListingMigrator migrator = new ResourceListingMigrator();