diff --git a/src/MNH/advecuvw_rk.f90 b/src/MNH/advecuvw_rk.f90
index 9e9dfe35dc58154882335e2a9350f4a61b7e3fd0..0185087231e5f3039ef2e3d475639035dd4aa3ea 100644
--- a/src/MNH/advecuvw_rk.f90
+++ b/src/MNH/advecuvw_rk.f90
@@ -219,6 +219,9 @@ SELECT CASE (HTEMP_SCHEME)
   ISPL = 6
  CASE('RK65')
   ISPL = 6
+ CASE DEFAULT
+  PRINT *,'ERROR: UNKNOWN HTEMP_SCHEME'
+  CALL ABORT()
 END SELECT
 !
 !