diff --git a/mbuild/tests/test_compound.py b/mbuild/tests/test_compound.py
index 3ed142af9..376f1eb6f 100644
--- a/mbuild/tests/test_compound.py
+++ b/mbuild/tests/test_compound.py
@@ -385,7 +385,7 @@ def test_load_protein(self):
     )
     def test_save_simple(self, ch3, extension):
         # Can't save gsd files with Windows
-        if extension == ".gsd" as not has_hoomd:
+        if extension == ".gsd" and not has_hoomd:
             return True
         outfile = "methyl_out" + extension
         ch3.save(filename=outfile)