diff --git a/src/MNH/modeln.f90 b/src/MNH/modeln.f90
index 84dc46588a2d3a7c2ca7cdc54d54bc5b9952477d..54fdbc67ae54f0338b5036736da0a9d0bc9b5572 100644
--- a/src/MNH/modeln.f90
+++ b/src/MNH/modeln.f90
@@ -2411,7 +2411,7 @@ IF (OEXIT) THEN
 END IF
 
 #ifndef MNH_OPENACC
-IF ( ALLOCATED( ZSEA ) ) DEALLOCATE( ZSEA )
+IF ( ASSOCIATED( ZSEA ) ) DEALLOCATE( ZSEA )
 DEALLOCATE( ZRWS )
 DEALLOCATE( ZPABST )
 #else