diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAxiosClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAxiosClientCodegen.java
index 92edd26b582c..cbadf4844091 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAxiosClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAxiosClientCodegen.java
@@ -20,11 +20,7 @@
 import io.swagger.v3.oas.models.media.Schema;
 import io.swagger.v3.parser.util.SchemaTypeUtil;
 import org.apache.commons.lang3.StringUtils;
-import org.openapitools.codegen.CliOption;
-import org.openapitools.codegen.CodegenModel;
-import org.openapitools.codegen.CodegenProperty;
-import org.openapitools.codegen.CodegenOperation;
-import org.openapitools.codegen.SupportingFile;
+import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.utils.ModelUtils;
 
@@ -146,15 +142,18 @@ public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> o
                 .filter(op -> op.consumes.stream().anyMatch(opc -> opc.values().stream().anyMatch("multipart/form-data"::equals)))
                 .forEach(op -> {
                     op.vendorExtensions.putIfAbsent("multipartFormData", true);
-                    op.allParams.stream()
-                            .filter(param -> param.isFormParam)
-                            .filter(param -> param.isArray)
-                            .filter(param -> param.dataFormat.equals("binary"))
-                            .forEach(param -> param.isCollectionFormatMulti = true);
                 });
         return objs;
     }
 
+    @Override
+    public void postProcessParameter(CodegenParameter parameter) {
+        super.postProcessParameter(parameter);
+        if (parameter.isFormParam && parameter.isArray && "binary".equals(parameter.dataFormat)) {
+            parameter.isCollectionFormatMulti = true;
+        }
+    }
+
     @Override
     public Map<String, Object> postProcessAllModels(Map<String, Object> objs) {
         Map<String, Object> result = super.postProcessAllModels(objs);