diff --git a/modules/openapi-generator-maven-plugin/src/main/java/org/openapitools/codegen/plugin/CodeGenMojo.java b/modules/openapi-generator-maven-plugin/src/main/java/org/openapitools/codegen/plugin/CodeGenMojo.java
index d47b3edc7640..6a709267e407 100644
--- a/modules/openapi-generator-maven-plugin/src/main/java/org/openapitools/codegen/plugin/CodeGenMojo.java
+++ b/modules/openapi-generator-maven-plugin/src/main/java/org/openapitools/codegen/plugin/CodeGenMojo.java
@@ -801,9 +801,7 @@ private String calculateInputSpecHash(File inputSpecFile) throws IOException {
     private URL inputSpecRemoteUrl(){
         try {
             return new URI(inputSpec).toURL();
-        } catch (URISyntaxException e) {
-            return null;
-        } catch (MalformedURLException e) {
+        } catch (URISyntaxException | MalformedURLException | IllegalArgumentException e) {
             return null;
         }
     }