diff --git a/src/poetry/repositories/repository.py b/src/poetry/repositories/repository.py
index 46ecaac7475..274ece2ae65 100644
--- a/src/poetry/repositories/repository.py
+++ b/src/poetry/repositories/repository.py
@@ -50,9 +50,7 @@ def find_packages(self, dependency: Dependency) -> list[Package]:
                 and not allow_prereleases
                 and not package.is_direct_origin()
             ):
-                if constraint.is_any():
-                    # we need this when all versions of the package are pre-releases
-                    ignored_pre_release_packages.append(package)
+                ignored_pre_release_packages.append(package)
                 continue
 
             packages.append(package)
diff --git a/tests/repositories/test_legacy_repository.py b/tests/repositories/test_legacy_repository.py
index bde7b563fc5..9503897a978 100644
--- a/tests/repositories/test_legacy_repository.py
+++ b/tests/repositories/test_legacy_repository.py
@@ -213,7 +213,7 @@ def test_find_packages_no_prereleases() -> None:
 
 
 @pytest.mark.parametrize(
-    ["constraint", "count"], [("*", 1), (">=1", 0), (">=19.0.0a0", 1)]
+    ["constraint", "count"], [("*", 1), (">=1", 1), ("<=18", 0), (">=19.0.0a0", 1)]
 )
 def test_find_packages_only_prereleases(constraint: str, count: int) -> None:
     repo = MockRepository()
@@ -228,13 +228,6 @@ def test_find_packages_only_prereleases(constraint: str, count: int) -> None:
             assert package.source_url == repo.url
 
 
-def test_find_packages_only_prereleases_empty_when_not_any() -> None:
-    repo = MockRepository()
-    packages = repo.find_packages(Factory.create_dependency("black", ">=1"))
-
-    assert len(packages) == 0
-
-
 @pytest.mark.parametrize(
     ["constraint", "expected"],
     [
diff --git a/tests/repositories/test_pypi_repository.py b/tests/repositories/test_pypi_repository.py
index 4d4e59e2539..5ab69c77f2b 100644
--- a/tests/repositories/test_pypi_repository.py
+++ b/tests/repositories/test_pypi_repository.py
@@ -87,7 +87,7 @@ def test_find_packages_does_not_select_prereleases_if_not_allowed() -> None:
 
 
 @pytest.mark.parametrize(
-    ["constraint", "count"], [("*", 1), (">=1", 0), (">=19.0.0a0", 1)]
+    ["constraint", "count"], [("*", 1), (">=1", 1), ("<=18", 0), (">=19.0.0a0", 1)]
 )
 def test_find_packages_only_prereleases(constraint: str, count: int) -> None:
     repo = MockRepository()