diff --git a/pkg/go/transformer/module-to-model.go b/pkg/go/transformer/module-to-model.go
index c1d3c742..edf1582c 100644
--- a/pkg/go/transformer/module-to-model.go
+++ b/pkg/go/transformer/module-to-model.go
@@ -116,8 +116,15 @@ func TransformModuleFilesToModel( //nolint:funlen,gocognit,cyclop
 			}
 
 			types = append(types, typeDef.GetType())
-			typeDef.Metadata.SourceInfo = &openfgav1.SourceInfo{
-				File: module.Name,
+			if typeDef.Metadata != nil {
+				typeDef.Metadata.SourceInfo = &openfgav1.SourceInfo{
+					File: module.Name,
+				}
+			} else {
+				transformErrors = multierror.Append(transformErrors, &ModuleTransformationSingleError{
+					Msg: "file is not a module",
+				})
+				continue
 			}
 			rawTypeDefs = append(rawTypeDefs, typeDef)
 		}
diff --git a/pkg/js/transformer/modules/modules-to-model.ts b/pkg/js/transformer/modules/modules-to-model.ts
index 8923aa3f..436d4494 100644
--- a/pkg/js/transformer/modules/modules-to-model.ts
+++ b/pkg/js/transformer/modules/modules-to-model.ts
@@ -49,7 +49,17 @@ export const transformModuleFilesToModel = (
           extendedTypeDefs[name].push(typeDef);
           continue;
         }
-
+        if (!typeDef.metadata) {
+          errors.push(
+            new ModuleTransformationSingleError({
+              msg: "file is not a module",
+              line: { start: 0, end: 0 },
+              column: { start: 0, end: 0 },
+              file: "nomodule.fga",
+            }),
+          );
+          continue;
+        }
         typeDef.metadata!.source_info = {
           file: name,
         };
diff --git a/tests/data/transformer-module/01-module-with-errors/expected_errors.json b/tests/data/transformer-module/01-module-with-errors/expected_errors.json
index 2059ccf8..33cb4a5a 100644
--- a/tests/data/transformer-module/01-module-with-errors/expected_errors.json
+++ b/tests/data/transformer-module/01-module-with-errors/expected_errors.json
@@ -1,4 +1,16 @@
 [
+  {
+    "msg": "file is not a module",
+    "file":"nomodule.fga",
+    "line": {
+      "start": 0,
+      "end": 0
+    },
+    "column": {
+      "start": 0,
+      "end": 0
+    }
+  },
   {
     "msg": "duplicate condition a_check",
     "file": "org.fga",
diff --git a/tests/data/transformer-module/01-module-with-errors/module/nomodule.fga b/tests/data/transformer-module/01-module-with-errors/module/nomodule.fga
new file mode 100644
index 00000000..6a5936f1
--- /dev/null
+++ b/tests/data/transformer-module/01-module-with-errors/module/nomodule.fga
@@ -0,0 +1,4 @@
+model
+  schema 1.1
+
+type usernomodule