diff --git a/src/package_diagram/visitor/translation_unit_visitor.cc b/src/package_diagram/visitor/translation_unit_visitor.cc
index 2c0b824c..5456cbe6 100644
--- a/src/package_diagram/visitor/translation_unit_visitor.cc
+++ b/src/package_diagram/visitor/translation_unit_visitor.cc
@@ -559,6 +559,18 @@ bool translation_unit_visitor::find_relationships(const clang::QualType &type,
             }
         }
     }
+    else if (type->isRecordType() && type->getAsRecordDecl()) {
+        // This is only possible for plain C translation unit, so we don't
+        // need to consider namespaces here
+        if (config().package_type() == config::package_type_t::kDirectory) {
+            if (diagram().should_include(
+                    common::get_qualified_name(*type->getAsRecordDecl()))) {
+                const auto target_id = get_package_id(type->getAsRecordDecl());
+                relationships.emplace_back(target_id, relationship_hint);
+                result = true;
+            }
+        }
+    }
 
     return result;
 }
diff --git a/tests/t30010/test_case.h b/tests/t30010/test_case.h
index 921d02c7..943da222 100644
--- a/tests/t30010/test_case.h
+++ b/tests/t30010/test_case.h
@@ -46,8 +46,6 @@ TEST_CASE("t30010", "[test-case][package]")
         REQUIRE_THAT(puml, IsDependency(_A("app"), _A("lib2")));
         REQUIRE_THAT(puml, IsDependency(_A("app"), _A("lib3")));
         REQUIRE_THAT(puml, IsDependency(_A("app"), _A("lib4")));
-        //        REQUIRE_THAT(puml, IsDependency(_A("app"), _A("library1")));
-        //        REQUIRE_THAT(puml, IsDependency(_A("app"), _A("library1")));
 
         save_puml(
             config.output_directory() + "/" + diagram->name + ".puml", puml);
diff --git a/tests/t30011/.clang-uml b/tests/t30011/.clang-uml
new file mode 100644
index 00000000..33463e69
--- /dev/null
+++ b/tests/t30011/.clang-uml
@@ -0,0 +1,12 @@
+compilation_database_dir: ..
+output_directory: puml
+diagrams:
+  t30011_package:
+    type: package
+    package_type: directory
+    glob:
+      - t30011.c
+    relative_to: ../../../tests/t30011
+    include:
+      paths:
+        - .
\ No newline at end of file
diff --git a/tests/t30011/app/app.h b/tests/t30011/app/app.h
new file mode 100644
index 00000000..469dd9b5
--- /dev/null
+++ b/tests/t30011/app/app.h
@@ -0,0 +1,14 @@
+#pragma once
+
+#include "../libraries/lib1/lib1.h"
+#include "../libraries/lib2/lib2.h"
+#include "../libraries/lib3/lib3.h"
+#include "../libraries/lib4/lib4.h"
+
+struct t30011_App {
+    struct t30011_A a;
+    struct t30011_B *b;
+    enum t30011_E e;
+};
+
+void c(struct t30011_App *app, struct t30011_C *c) { }
diff --git a/tests/t30011/libraries/lib1/lib1.h b/tests/t30011/libraries/lib1/lib1.h
new file mode 100644
index 00000000..0b82d65b
--- /dev/null
+++ b/tests/t30011/libraries/lib1/lib1.h
@@ -0,0 +1,3 @@
+#pragma once
+
+struct t30011_A { };
diff --git a/tests/t30011/libraries/lib2/lib2.h b/tests/t30011/libraries/lib2/lib2.h
new file mode 100644
index 00000000..ebc93b2d
--- /dev/null
+++ b/tests/t30011/libraries/lib2/lib2.h
@@ -0,0 +1,3 @@
+#pragma once
+
+struct t30011_B { };
diff --git a/tests/t30011/libraries/lib3/lib3.h b/tests/t30011/libraries/lib3/lib3.h
new file mode 100644
index 00000000..b7c8835a
--- /dev/null
+++ b/tests/t30011/libraries/lib3/lib3.h
@@ -0,0 +1,3 @@
+#pragma once
+
+enum t30011_E { e1, e2, e3 };
diff --git a/tests/t30011/libraries/lib4/lib4.h b/tests/t30011/libraries/lib4/lib4.h
new file mode 100644
index 00000000..408898b0
--- /dev/null
+++ b/tests/t30011/libraries/lib4/lib4.h
@@ -0,0 +1,3 @@
+#pragma once
+
+struct t30011_C { };
diff --git a/tests/t30011/t30011.c b/tests/t30011/t30011.c
new file mode 100644
index 00000000..ea60a509
--- /dev/null
+++ b/tests/t30011/t30011.c
@@ -0,0 +1,3 @@
+#include "app/app.h"
+
+struct t30011_App app;
diff --git a/tests/t30011/test_case.h b/tests/t30011/test_case.h
new file mode 100644
index 00000000..b78c2c41
--- /dev/null
+++ b/tests/t30011/test_case.h
@@ -0,0 +1,61 @@
+/**
+ * tests/t30011/test_case.h
+ *
+ * Copyright (c) 2021-2023 Bartek Kryza <bkryza@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+TEST_CASE("t30011", "[test-case][package]")
+{
+    auto [config, db] = load_config("t30011");
+
+    auto diagram = config.diagrams["t30011_package"];
+
+    REQUIRE(diagram->name == "t30011_package");
+
+    auto model = generate_package_diagram(*db, diagram);
+
+    REQUIRE(model->name() == "t30011_package");
+
+    {
+        auto puml = generate_package_puml(diagram, *model);
+        AliasMatcher _A(puml);
+
+        REQUIRE_THAT(puml, StartsWith("@startuml"));
+        REQUIRE_THAT(puml, EndsWith("@enduml\n"));
+
+        REQUIRE_THAT(puml, IsPackage("app"));
+        REQUIRE_THAT(puml, IsPackage("libraries"));
+        REQUIRE_THAT(puml, IsPackage("lib1"));
+        REQUIRE_THAT(puml, IsPackage("lib2"));
+        REQUIRE_THAT(puml, !IsPackage("library1"));
+        REQUIRE_THAT(puml, !IsPackage("library2"));
+
+        REQUIRE_THAT(puml, IsDependency(_A("app"), _A("lib1")));
+        REQUIRE_THAT(puml, IsDependency(_A("app"), _A("lib2")));
+        REQUIRE_THAT(puml, IsDependency(_A("app"), _A("lib3")));
+        REQUIRE_THAT(puml, IsDependency(_A("app"), _A("lib4")));
+
+        save_puml(
+            config.output_directory() + "/" + diagram->name + ".puml", puml);
+    }
+
+    {
+        auto j = generate_package_json(diagram, *model);
+
+        using namespace json;
+
+        save_json(config.output_directory() + "/" + diagram->name + ".json", j);
+    }
+}
\ No newline at end of file
diff --git a/tests/test_cases.cc b/tests/test_cases.cc
index 8605ad19..b4b92bd9 100644
--- a/tests/test_cases.cc
+++ b/tests/test_cases.cc
@@ -355,6 +355,7 @@ using namespace clanguml::test::matchers;
 #include "t30008/test_case.h"
 #include "t30009/test_case.h"
 #include "t30010/test_case.h"
+#include "t30011/test_case.h"
 
 ///
 /// Include diagram tests
diff --git a/tests/test_cases.yaml b/tests/test_cases.yaml
index 7302d814..97734d89 100644
--- a/tests/test_cases.yaml
+++ b/tests/test_cases.yaml
@@ -311,6 +311,9 @@ test_cases:
     - name: t30010
       title: Package diagram with packages from directory structure
       description:
+    - name: t30011
+      title: Package diagram with packages from directory structure for plain C
+      description:
   Include diagrams:
     - name: t40001
       title: Basic include graph diagram test case