diff --git a/ixmp/utils/__init__.py b/ixmp/utils/__init__.py
index 4140bbf69..e558712b1 100644
--- a/ixmp/utils/__init__.py
+++ b/ixmp/utils/__init__.py
@@ -12,7 +12,7 @@
 
 from ixmp.backend import ItemType
 
-if TYPE_CHECKING:
+if TYPE_CHECKING:  # pragma: no cover
     from ixmp import TimeSeries
 
 log = logging.getLogger(__name__)
diff --git a/ixmp/utils/sphinx_linkcode_github.py b/ixmp/utils/sphinx_linkcode_github.py
index 2307749d8..46869a5de 100644
--- a/ixmp/utils/sphinx_linkcode_github.py
+++ b/ixmp/utils/sphinx_linkcode_github.py
@@ -10,7 +10,7 @@
 
 from sphinx.util import logging
 
-if TYPE_CHECKING:
+if TYPE_CHECKING:  # pragma: no cover
     import sphinx.application
 
 log = logging.getLogger(__name__)