diff --git a/tests/poseidon2/testPermutation.nim b/tests/poseidon2/testPermutation.nim
index b8239fb..b6808e5 100644
--- a/tests/poseidon2/testPermutation.nim
+++ b/tests/poseidon2/testPermutation.nim
@@ -15,7 +15,7 @@ suite "permutation":
     var y: F = toF(1)
     var z: F = toF(2)
 
-    permInplace(x, y, z)
+    permInPlace(x, y, z)
 
     check toDecimal(x) == "21882471761025344482456282050943515707267606647948403374880378562101343146243"
     check toDecimal(y) == "09030699330013392132529464674294378792132780497765201297316864012141442630280"