diff --git a/aesara/tensor/math_opt.py b/aesara/tensor/math_opt.py
index bc83e33808..efebb8dd5c 100644
--- a/aesara/tensor/math_opt.py
+++ b/aesara/tensor/math_opt.py
@@ -3532,6 +3532,8 @@ def local_reciprocal_1_plus_exp(fgraph, node):
                         return out
 
 
+# x_lv, if any, is the logic variable version of some term x,
+# while x_at, if any, is the Aesara tensor version for the same.
 def distribute_mul_over_add(in_lv, out_lv):
     from kanren import conso, eq, fact, heado, tailo
 
@@ -3696,7 +3698,7 @@ def distribute_div_over_sub(in_lv, out_lv):
 
 fastmath = EquilibriumDB()
 
-optdb.register("fastmath", fastmath, 0.05, "fast_run", "mul")
+optdb.register("fastmath", fastmath, 1, "fast_run", "mul")
 
 fastmath.register(
     "dist_mul_over_add_opt",
diff --git a/tests/tensor/test_math_opt.py b/tests/tensor/test_math_opt.py
index 1d0bd0742a..c995126318 100644
--- a/tests/tensor/test_math_opt.py
+++ b/tests/tensor/test_math_opt.py
@@ -4556,6 +4556,8 @@ class TestDistributiveOpts:
     y_at = vector("y")
     a_at = matrix("a")
 
+    # x_lv, if any, is the logic variable version of some term x,
+    # while x_at is the Aesara tensor version for the same.
     @pytest.mark.parametrize(
         "orig_operation, optimized_operation",
         [