diff --git a/pkg/filevalidation/validator.go b/pkg/filevalidation/validator.go
index 08fe42d05..c69dc302a 100644
--- a/pkg/filevalidation/validator.go
+++ b/pkg/filevalidation/validator.go
@@ -105,9 +105,9 @@ type FileValidator struct {
 	Categories []string
 }
 
-type Opt func(v *FileValidator) *FileValidator
+type Option func(v *FileValidator) *FileValidator
 
-func WithCategories(categories ...string) Opt {
+func WithCategories(categories ...string) Option {
 	return func(v *FileValidator) *FileValidator {
 		v.Categories = categories
 
@@ -132,7 +132,7 @@ func WithCategories(categories ...string) Opt {
 	}
 }
 
-func WithMaxFileSize(maxFileSize int64) Opt {
+func WithMaxFileSize(maxFileSize int64) Option {
 	return func(v *FileValidator) *FileValidator {
 		v.MaxFileSize = maxFileSize
 
@@ -140,7 +140,7 @@ func WithMaxFileSize(maxFileSize int64) Opt {
 	}
 }
 
-func NewValidator(opts ...Opt) *FileValidator {
+func NewValidator(opts ...Option) *FileValidator {
 	v := &FileValidator{
 		MaxFileSize:       DefaultMaxFileSize,
 		AllowedMimeTypes:  make(map[string]bool),
@@ -151,18 +151,6 @@ func NewValidator(opts ...Opt) *FileValidator {
 		v = opt(v)
 	}
 
-	if len(v.Categories) == 0 {
-		for _, fileType := range FileTypes {
-			v.AllowedMimeTypes[fileType.MimeType] = true
-			for _, ext := range fileType.Extensions {
-				if v.AllowedExtensions[ext] == nil {
-					v.AllowedExtensions[ext] = []string{}
-				}
-				v.AllowedExtensions[ext] = append(v.AllowedExtensions[ext], fileType.MimeType)
-			}
-		}
-	}
-
 	return v
 }
 
diff --git a/pkg/filevalidation/validator_test.go b/pkg/filevalidation/validator_test.go
index ca1c28e73..2a2df4e1e 100644
--- a/pkg/filevalidation/validator_test.go
+++ b/pkg/filevalidation/validator_test.go
@@ -31,9 +31,9 @@ func TestNewValidator(t *testing.T) {
 		{
 			name:           "No categories (all types)",
 			categories:     []string{},
-			expectedMimes:  []string{"application/pdf", "image/jpeg", "text/plain", "video/mp4"},
-			expectedExts:   []string{".pdf", ".jpg", ".txt", ".mp4"},
-			unexpectedMime: "application/octet-stream",
+			expectedMimes:  []string{},
+			expectedExts:   []string{},
+			unexpectedMime: "application/pdf",
 		},
 		{
 			name:           "Only documents",
@@ -131,7 +131,7 @@ func TestValidate(t *testing.T) {
 		},
 		{
 			name:        "File too large",
-			validator:   NewValidator().WithMaxFileSize(1024 * 1024), // 1MB max
+			validator:   NewValidator(WithCategories(CategoryDocument)).WithMaxFileSize(1024 * 1024), // 1MB max
 			filename:    "test.pdf",
 			contentType: "application/pdf",
 			fileSize:    2 * 1024 * 1024, // 2MB
@@ -149,7 +149,7 @@ func TestValidate(t *testing.T) {
 		},
 		{
 			name:        "Missing file extension",
-			validator:   NewValidator(),
+			validator:   NewValidator(WithCategories(CategoryDocument)),
 			filename:    "testfile",
 			contentType: "application/pdf",
 			fileSize:    1024,
@@ -167,7 +167,7 @@ func TestValidate(t *testing.T) {
 		},
 		{
 			name:        "Content type doesn't match extension",
-			validator:   NewValidator(),
+			validator:   NewValidator(WithCategories(CategoryImage, CategoryDocument)),
 			filename:    "test.pdf",
 			contentType: "image/jpeg",
 			fileSize:    1024,
@@ -225,7 +225,7 @@ func TestValidateEdgeCases(t *testing.T) {
 	}{
 		{
 			name:        "Zero file size",
-			validator:   NewValidator(),
+			validator:   NewValidator(WithCategories(CategoryText)),
 			filename:    "empty.txt",
 			contentType: "text/plain",
 			fileSize:    0,
@@ -233,7 +233,7 @@ func TestValidateEdgeCases(t *testing.T) {
 		},
 		{
 			name:        "Exact max file size",
-			validator:   NewValidator().WithMaxFileSize(1024),
+			validator:   NewValidator(WithCategories(CategoryText)).WithMaxFileSize(1024),
 			filename:    "exact.txt",
 			contentType: "text/plain",
 			fileSize:    1024,
@@ -241,7 +241,7 @@ func TestValidateEdgeCases(t *testing.T) {
 		},
 		{
 			name:        "File with uppercase extension",
-			validator:   NewValidator(),
+			validator:   NewValidator(WithCategories(CategoryDocument)),
 			filename:    "test.PDF",
 			contentType: "application/pdf",
 			fileSize:    1024,
@@ -258,7 +258,7 @@ func TestValidateEdgeCases(t *testing.T) {
 		},
 		{
 			name:        "Empty filename",
-			validator:   NewValidator(),
+			validator:   NewValidator(WithCategories(CategoryText)),
 			filename:    "",
 			contentType: "text/plain",
 			fileSize:    1024,
@@ -267,7 +267,7 @@ func TestValidateEdgeCases(t *testing.T) {
 		},
 		{
 			name:        "Empty content type",
-			validator:   NewValidator(),
+			validator:   NewValidator(WithCategories(CategoryText)),
 			filename:    "test.txt",
 			contentType: "",
 			fileSize:    1024,
@@ -407,7 +407,17 @@ func TestExtensionsWithMultipleMimeTypes(t *testing.T) {
 	// Find extensions that have multiple MIME types
 	for ext, mimeTypes := range extToMimes {
 		if len(mimeTypes) > 1 {
-			v := NewValidator()
+			v := NewValidator(
+				WithCategories(
+					CategoryData,
+					CategoryDocument,
+					CategoryImage,
+					CategoryPresentation,
+					CategorySpreadsheet,
+					CategoryText,
+					CategoryVideo,
+				),
+			)
 
 			// All MIME types for this extension should be valid
 			for _, mimeType := range mimeTypes {
@@ -423,7 +433,7 @@ func TestExtensionsWithMultipleMimeTypes(t *testing.T) {
 
 // BenchmarkValidate benchmarks the Validate function
 func BenchmarkValidate(b *testing.B) {
-	v := NewValidator()
+	v := NewValidator(WithCategories(CategoryDocument))
 	b.ResetTimer()
 
 	for i := 0; i < b.N; i++ {