diff --git a/modules/openapi-generator/src/main/resources/Java/JSON.mustache b/modules/openapi-generator/src/main/resources/Java/JSON.mustache
index 724b428392b..e207efbc05b 100644
--- a/modules/openapi-generator/src/main/resources/Java/JSON.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/JSON.mustache
@@ -25,7 +25,9 @@ import org.threeten.bp.OffsetDateTime;
 import org.threeten.bp.format.DateTimeFormatter;
 {{/threetenbp}}
 
+{{#parent.length}}
 import {{modelPackage}}.*;
+{{/parent.length}}
 import okio.ByteString;
 
 import java.io.IOException;
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/JSON.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/JSON.mustache
index 7dbb56a3da1..a7e1df8598a 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/JSON.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/JSON.mustache
@@ -25,7 +25,9 @@ import org.threeten.bp.OffsetDateTime;
 import org.threeten.bp.format.DateTimeFormatter;
 {{/threetenbp}}
 
+{{#parent.length}}
 import {{modelPackage}}.*;
+{{/parent.length}}
 
 import java.io.IOException;
 import java.io.StringReader;