diff --git a/external/RSL_LITE/rsl_bcast.c b/external/RSL_LITE/rsl_bcast.c
index 28c6725d7e..50f664b2ef 100755
--- a/external/RSL_LITE/rsl_bcast.c
+++ b/external/RSL_LITE/rsl_bcast.c
@@ -82,7 +82,7 @@ static int destroy_par_info ( p )
 
 static int destroy_list( list, dfcn )
      rsl_list_t ** list ;          /* pointer to pointer to list */
-     int (*dfcn)() ;               /* pointer to function for destroying
+     int (*dfcn)(void *) ;         /* pointer to function for destroying
                                       the data field of the list */
 {
   rsl_list_t *p, *trash ;
diff --git a/external/io_grib1/MEL_grib1/pack_spatial.c b/external/io_grib1/MEL_grib1/pack_spatial.c
index de5f64c069..3868436f78 100644
--- a/external/io_grib1/MEL_grib1/pack_spatial.c
+++ b/external/io_grib1/MEL_grib1/pack_spatial.c
@@ -88,7 +88,7 @@ int	pack_spatial (  pt_cnt, bit_cnt, pack_null, fbuff, ppbitstream,
     float max_grid;		/* maximum value in grid */
     float ftemp;		/* temporary float containing grid value */
     unsigned long *pBitstream;
-    unsigned long grib_local_ibm();
+    unsigned long grib_local_ibm(double);
     int wordnum;
     int zero_cnt;
     int prec_too_high = 0;