diff --git a/nifty6/extra.py b/nifty6/extra.py
index 1a134aad98c319840f33d4c755b9a53af0c79f26..8bb146aed979c91c3feb7cbf5c018478b644de65 100644
--- a/nifty6/extra.py
+++ b/nifty6/extra.py
@@ -296,3 +296,4 @@ def check_jacobian_consistency(op, loc, tol=1e-8, ntries=100, perf_check=True):
             print(hist)
             raise ValueError("gradient and value seem inconsistent")
         loc = locnext
+        consistency_check(linmid.jac)