diff --git a/src/MNH/read_all_data_grib_case.f90 b/src/MNH/read_all_data_grib_case.f90
index ade924eadf78caaefc6d50429522bb2b4882e267..e8dcc36b6d4f4ba33d43f117daa84b42251daddb 100644
--- a/src/MNH/read_all_data_grib_case.f90
+++ b/src/MNH/read_all_data_grib_case.f90
@@ -583,8 +583,8 @@ SELECT CASE (IMODEL)
       CALL SEARCH_FIELD(IGRIB,INUM,KPARAM=229)
       !
       IF(INUM < 0) THEN
-        WRITE (ILUOUT0,'(A)')' | !!! WARNING !!! Sea wave height is missing in &
-               the GRIB file - the default value of 2 meters is used'
+        WRITE (ILUOUT0,'(A)')' | !!! WARNING !!! Sea wave height is missing in '// &
+               'the GRIB file - the default value of 2 meters is used'
         XZWS = 2.0       
       ELSE
         GFIND=.TRUE.