diff --git a/tools/python.mk b/tools/python.mk
index 343fa1df0..c07b55e4a 100644
--- a/tools/python.mk
+++ b/tools/python.mk
@@ -37,13 +37,13 @@ install: $(VENV)
 .format: $(VENV)
 	source $(VENV)/bin/activate
 	black .
-	isort . --profile black
+	isort . --combine-as --profile black
 
 .PHONY: .format-check
 .format-check: $(VENV)
 	source $(VENV)/bin/activate
 	black . --check
-	isort . --profile black --check
+	isort . --combine-as --profile black --check
 
 .PHONY: .pylint
 .pylint: $(VENV)