diff --git a/src/poetry/console/commands/show.py b/src/poetry/console/commands/show.py
index 6216a7fb2cf..b607d50ff17 100644
--- a/src/poetry/console/commands/show.py
+++ b/src/poetry/console/commands/show.py
@@ -504,7 +504,7 @@ def find_latest_package(
             requires = root.all_requires
 
             for dep in requires:
-                if dep.name == package.name:
+                if dep.name == package.name and dep.source_type == package.source_type:
                     provider = Provider(root, self.poetry.pool, NullIO())
                     return provider.search_for_direct_origin_dependency(dep)
 
diff --git a/src/poetry/puzzle/provider.py b/src/poetry/puzzle/provider.py
index ebd7916c903..f4c26f75f41 100644
--- a/src/poetry/puzzle/provider.py
+++ b/src/poetry/puzzle/provider.py
@@ -242,7 +242,7 @@ def search_for_direct_origin_dependency(self, dependency: Dependency) -> Package
 
         else:
             raise RuntimeError(
-                f"Unknown direct dependency type {dependency.source_type}"
+                f"{dependency}: unknown direct dependency type {dependency.source_type}"
             )
 
         if dependency.is_vcs():