diff --git a/core/server/api_container/server/startosis_engine/builtins/import_module/import_module.go b/core/server/api_container/server/startosis_engine/builtins/import_module/import_module.go
index 2bc7c02860..40daa464b8 100644
--- a/core/server/api_container/server/startosis_engine/builtins/import_module/import_module.go
+++ b/core/server/api_container/server/startosis_engine/builtins/import_module/import_module.go
@@ -48,7 +48,7 @@ func NewImportModule(
 					IsOptional:        false,
 					ZeroValueProvider: builtin_argument.ZeroValueProvider[starlark.String],
 					Validator: func(value starlark.Value) *startosis_errors.InterpretationError {
-						return builtin_argument.LocatorValidator(value, packageId, ModuleFileArgName)
+						return builtin_argument.NonEmptyString(value, ModuleFileArgName)
 					},
 				},
 			},
diff --git a/core/server/api_container/server/startosis_engine/builtins/read_file/read_file.go b/core/server/api_container/server/startosis_engine/builtins/read_file/read_file.go
index 687fc6d467..6ab3d5197a 100644
--- a/core/server/api_container/server/startosis_engine/builtins/read_file/read_file.go
+++ b/core/server/api_container/server/startosis_engine/builtins/read_file/read_file.go
@@ -29,7 +29,7 @@ func NewReadFileHelper(
 					IsOptional:        false,
 					ZeroValueProvider: builtin_argument.ZeroValueProvider[starlark.String],
 					Validator: func(value starlark.Value) *startosis_errors.InterpretationError {
-						return builtin_argument.LocatorValidator(value, packageId, SrcArgName)
+						return builtin_argument.NonEmptyString(value, SrcArgName)
 					},
 				},
 			},
diff --git a/core/server/api_container/server/startosis_engine/kurtosis_instruction/upload_files/upload_files.go b/core/server/api_container/server/startosis_engine/kurtosis_instruction/upload_files/upload_files.go
index 57da6c303c..cee28132b0 100644
--- a/core/server/api_container/server/startosis_engine/kurtosis_instruction/upload_files/upload_files.go
+++ b/core/server/api_container/server/startosis_engine/kurtosis_instruction/upload_files/upload_files.go
@@ -46,7 +46,7 @@ func NewUploadFiles(
 					IsOptional:        false,
 					ZeroValueProvider: builtin_argument.ZeroValueProvider[starlark.String],
 					Validator: func(value starlark.Value) *startosis_errors.InterpretationError {
-						return builtin_argument.LocatorValidator(value, packageId, SrcArgName)
+						return builtin_argument.NonEmptyString(value, SrcArgName)
 					},
 				},
 				{
diff --git a/core/server/api_container/server/startosis_engine/kurtosis_starlark_framework/builtin_argument/validators.go b/core/server/api_container/server/startosis_engine/kurtosis_starlark_framework/builtin_argument/validators.go
index 119227df5c..2ec22580d4 100644
--- a/core/server/api_container/server/startosis_engine/kurtosis_starlark_framework/builtin_argument/validators.go
+++ b/core/server/api_container/server/startosis_engine/kurtosis_starlark_framework/builtin_argument/validators.go
@@ -110,16 +110,3 @@ func DurationOrNone(value starlark.Value, attributeName string) *startosis_error
 	}
 	return nil
 }
-
-func LocatorValidator(locatorStarlarkValue starlark.Value, packageId string, argNameForLogging string) *startosis_errors.InterpretationError {
-
-	if err := NonEmptyString(locatorStarlarkValue, argNameForLogging); err != nil {
-		return err
-	}
-
-	_, ok := locatorStarlarkValue.(starlark.String)
-	if !ok {
-		return startosis_errors.NewInterpretationError("Value for '%s' was expected to be a starlark.String but was '%s'", argNameForLogging, reflect.TypeOf(locatorStarlarkValue))
-	}
-	return nil
-}