diff --git a/src/bonsai/Makefile b/src/bonsai/Makefile
index 5b484f9942..68433466bd 100644
--- a/src/bonsai/Makefile
+++ b/src/bonsai/Makefile
@@ -336,7 +336,11 @@ test:
 
 .PHONY: test-core
 test-core:
+ifndef MODULE
 	pytest -p no:pytest-blender test/core
+else
+	pytest -p no:pytest-blender test/core/test_${MODULE}.py
+endif
 
 .PHONY: test-bim
 test-bim: