diff --git a/docs/generators/postman-collection.md b/docs/generators/postman-collection.md
index a0a97b43f069..f15bc8ec58cb 100644
--- a/docs/generators/postman-collection.md
+++ b/docs/generators/postman-collection.md
@@ -156,6 +156,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |OAuth2_Password|✓|OAS2,OAS3
 |OAuth2_ClientCredentials|✓|OAS2,OAS3
 |OAuth2_AuthorizationCode|✓|OAS2,OAS3
+|SignatureAuth|✗|OAS3
 
 ### Wire Format Feature
 | Name | Supported | Defined By |
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
index 09efce08cefe..8950645797ee 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
@@ -204,8 +204,8 @@ void configureGeneratorProperties() {
         // allows generating only models by specifying a CSV of models to generate, or empty for all
         // NOTE: Boolean.TRUE is required below rather than `true` because of JVM boxing constraints and type inference.
         generateApis = GlobalSettings.getProperty(CodegenConstants.APIS) != null ? Boolean.valueOf(GlobalSettings.getProperty(CodegenConstants.APIS)) : getGeneratorPropertyDefaultSwitch(CodegenConstants.APIS, null);
-        generateModels = GlobalSettings.getProperty(CodegenConstants.MODELS) != null ? Boolean.TRUE : getGeneratorPropertyDefaultSwitch(CodegenConstants.MODELS, null);
-        generateSupportingFiles = GlobalSettings.getProperty(CodegenConstants.SUPPORTING_FILES) != null ? Boolean.TRUE : getGeneratorPropertyDefaultSwitch(CodegenConstants.SUPPORTING_FILES, null);
+        generateModels = GlobalSettings.getProperty(CodegenConstants.MODELS) != null ? Boolean.valueOf(GlobalSettings.getProperty(CodegenConstants.MODELS)) : getGeneratorPropertyDefaultSwitch(CodegenConstants.MODELS, null);
+        generateSupportingFiles = GlobalSettings.getProperty(CodegenConstants.SUPPORTING_FILES) != null ? Boolean.valueOf(GlobalSettings.getProperty(CodegenConstants.SUPPORTING_FILES)) : getGeneratorPropertyDefaultSwitch(CodegenConstants.SUPPORTING_FILES, null);
 
         if (generateApis == null && generateModels == null && generateSupportingFiles == null) {
             // no specifics are set, generate everything