diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6d04d0a2..d9dd82b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.14.4] - 2024-02-21
+
+### Fixed
+- Fix search tree for main app binary in library mode
+
 ## [1.14.3] - 2024-02-09
 
 ### Changed
diff --git a/src/ragger/conftest/base_conftest.py b/src/ragger/conftest/base_conftest.py
index 2b00f281..e6ecbb0d 100644
--- a/src/ragger/conftest/base_conftest.py
+++ b/src/ragger/conftest/base_conftest.py
@@ -122,12 +122,13 @@ def prepare_speculos_args(root_pytest_dir: Path, firmware: Firmware, display: bo
     # project_root_dir / conf.OPTIONAL.APP_DIR. There should be only one subfolder in the path.
     app_path = None
     if conf.OPTIONAL.LOAD_MAIN_APP_AS_LIBRARY:
-        app_dir_children = list((project_root_dir / conf.OPTIONAL.APP_DIR).iterdir())
-        if len(app_dir_children) != 1:
+        app_dir_content = list((project_root_dir / conf.OPTIONAL.APP_DIR).iterdir())
+        app_dir_subdirectories = [child for child in app_dir_content if child.is_dir()]
+        if len(app_dir_subdirectories) != 1:
             raise ValueError(
-                f"Expected a single folder in {conf.OPTIONAL.APP_DIR}, found {len(app_dir_children)}"
+                f"Expected a single folder in {conf.OPTIONAL.APP_DIR}, found {len(app_dir_subdirectories)}"
             )
-        app_path = find_main_application(app_dir_children[0], device)
+        app_path = find_main_application(app_dir_subdirectories[0], device)
     # If the app is standalone, the main app should be located in project_root_dir / conf.OPTIONAL.APP_DIR
     else:
         app_path = find_main_application(project_root_dir / conf.OPTIONAL.APP_DIR, device)
diff --git a/tests/unit/conftests/test_base_conftest.py b/tests/unit/conftests/test_base_conftest.py
index ddd0d275..52125526 100644
--- a/tests/unit/conftests/test_base_conftest.py
+++ b/tests/unit/conftests/test_base_conftest.py
@@ -15,6 +15,8 @@ def prepare_base_dir(directory: Path) -> Tuple[Path, Path]:
     (directory / "deps" / "dep" / "build" / "stax" / "bin").mkdir(parents=True, exist_ok=True)
     dep_path = (directory / "deps" / "dep" / "build" / "stax" / "bin" / "app.elf")
     dep_path.touch()
+    token_file_path = (directory / "deps" / ".ethereum_application_build_goes_there")
+    token_file_path.touch()
     app_path = (directory / "build" / "stax" / "bin" / "app.elf")
     app_path.touch()
     return app_path, dep_path