diff --git a/pdm_build.py b/pdm_build.py
index 67e71cbb05..b1b662bd39 100644
--- a/pdm_build.py
+++ b/pdm_build.py
@@ -3,7 +3,7 @@
 
 from pdm.backend.hooks import Context
 
-TIANGOLO_BUILD_PACKAGE = os.getenv("TIANGOLO_BUILD_PACKAGE", "typer")
+TIANGOLO_BUILD_PACKAGE = os.getenv("TIANGOLO_BUILD_PACKAGE")
 
 
 def pdm_build_initialize(context: Context) -> None:
diff --git a/pyproject.toml b/pyproject.toml
index 68c270e026..f30f4b80b1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -120,7 +120,7 @@ scripts = {}
 # than the one for a default included file.
 # By not using "*" and explicitly excluding the top level packages, they get a higher
 # score than the default inclusion
-excludes = ["sqlmodel", "tests", "pdm_build.py"]
+excludes = ["sqlmodel", "docs_src", "tests", "pdm_build.py"]
 # source-includes needs to explicitly define some value because PDM will check the
 # truthy value of the list, and if empty, will include some defaults, including "tests",
 # an empty string doesn't match anything, but makes the list truthy, so that PDM