diff --git a/lbmpy/fluctuatinglb.py b/lbmpy/fluctuatinglb.py
index 069fa9994412e9cd379020ec96147ea1818c7639..73f7bd07c6ab3b27aa8a34840271b7c6e00b16d3 100644
--- a/lbmpy/fluctuatinglb.py
+++ b/lbmpy/fluctuatinglb.py
@@ -28,7 +28,7 @@ def add_fluctuations_to_collision_rule(collision_rule, temperature=None, amplitu
     if not method.is_weighted_orthogonal:
         raise ValueError("Fluctuations can only be added to weighted-orthogonal methods")
 
-    rng_symbol_gen = random_symbol(collision_rule.subexpressions, seed,
+    rng_symbol_gen = random_symbol(collision_rule.subexpressions, seed=seed,
                                    rng_node=rng_node, dim=method.dim, offsets=block_offsets)
     correction = fluctuation_correction(method, rng_symbol_gen, amplitudes)