diff --git a/active_projects/eola2/determinant_puzzle.py b/active_projects/eola2/determinant_puzzle.py
index 6f335463..aeda8480 100644
--- a/active_projects/eola2/determinant_puzzle.py
+++ b/active_projects/eola2/determinant_puzzle.py
@@ -98,7 +98,7 @@ class WorkOutNumerically(Scene):
             non_numbers = VGroup(*[m for m in det if m not in numbers])
             matrix_numbers = VGroup(*[
                 matrix.mob_matrix[i][j].copy()
-                for i, j in (0, 0), (1, 1), (0, 1), (1, 0)
+                for i, j in ((0, 0), (1, 1), (0, 1), (1, 0))
             ])
             self.play(
                 LaggedStart(FadeIn, non_numbers, run_time=1),
diff --git a/active_projects/eop/bayes.py b/active_projects/eop/bayes.py
index 0ffd0bdc..bbf62642 100644
--- a/active_projects/eop/bayes.py
+++ b/active_projects/eop/bayes.py
@@ -1010,7 +1010,7 @@ class UpdatePokerPrior(SampleSpaceScene):
                 "P(", s, self.double_heart_template, ")",
                 "= ", num
             )
-            for s, num in ("", p_str), ("\\text{not }", q_str)
+            for s, num in (("", p_str), ("\\text{not }", q_str))
         ]
         for label in labels:
             label.scale(0.7)
diff --git a/active_projects/eop/bayes_footnote.py b/active_projects/eop/bayes_footnote.py
index 98137182..841ad8a2 100644
--- a/active_projects/eop/bayes_footnote.py
+++ b/active_projects/eop/bayes_footnote.py
@@ -486,7 +486,7 @@ class TryUnitSquareVisual(SampleSpaceScene):
                 TexMobject("P(\\text{Disease})", s1),
                 TexMobject("P(\\text{Not disease})", s2),
             ).scale(0.7)
-            for s1, s2 in ("", ""), ("= 0.001", "= 0.999")
+            for s1, s2 in (("", ""), ("= 0.001", "= 0.999"))
         ]
         sample_space.get_side_braces_and_labels(initial_labels)
         sample_space.add_braces_and_labels()