1 files changed, 2 insertions, 3 deletions
diff --git a/param.ccl b/param.ccl
index b3d65f1..4d5900b 100644
--- a/param.ccl
+++ b/param.ccl
@@ -476,10 +476,9 @@ INT interpolation_order "Order for interpolation" STEERABLE = ALWAYS
   1:4 :: "Choose between first and forth order interpolation"
 } 2
 
-KEYWORD interpolation_operator "Name of interpolation operator to use" STEERABLE = ALWAYS
+STRING interpolation_operator "Name of interpolation operator to use" STEERABLE = ALWAYS
 {
-  "Lagrange polynomial interpolation (maximum degree)" :: "see thorn LocalInterp for details"
-  "Lagrange polynomial interpolation (tensor product)" :: "see thorn LocalInterp for details"
+  ".+" :: "A valid name for a registered interpolation operator"
 } "Lagrange polynomial interpolation (tensor product)"
 
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