diff --git a/src/library/libbwc.c b/src/library/libbwc.c
index c0fcf84..0fe255a 100755
--- a/src/library/libbwc.c
+++ b/src/library/libbwc.c
@@ -3563,7 +3563,7 @@ bwc_set_tiles(bwc_field *const field, uint64 tilesX, uint64 tilesY, uint64 tiles
       ! Check if the number of tiles exceeds its maximum allowa- !
       ! ble value.                                               !
       \*--------------------------------------------------------*/
-      if(((double)num_tiles_X * num_tiles_Y * num_tiles_Z * num_tiles_TS) > 0xFFFFFFFFFFFFFFFF)
+      if(((double)num_tiles_X * num_tiles_Y * num_tiles_Z * num_tiles_TS) > (double)0xFFFFFFFFFFFFFFFF)
       {
          fprintf(stderr,"o==========================================================o\n"\
                         "| WARNING: Invalid Tile Dimensions                         |\n"\
@@ -3593,7 +3593,7 @@ bwc_set_tiles(bwc_field *const field, uint64 tilesX, uint64 tilesY, uint64 tiles
       ! Check if the number of tiles exceeds its maximum allowa- !
       ! ble value.                                               !
       \*--------------------------------------------------------*/
-      if(((double)tilesX * tilesY * tilesZ * tilesTS) > 0xFFFFFFFFFFFFFFFF)
+      if(((double)tilesX * tilesY * tilesZ * tilesTS) > (double)0xFFFFFFFFFFFFFFFF)
       {
          fprintf(stderr,"o==========================================================o\n"\
                         "| WARNING: Invalid Number Of Tiles                         |\n"\
@@ -4449,4 +4449,4 @@ bwc_decompress(bwc_field *const field, bwc_data *const data)
    #endif
 
    return 0;
-}
\ No newline at end of file
+}
diff --git a/src/library/tier1.c b/src/library/tier1.c
index fce996e..cee65cb 100755
--- a/src/library/tier1.c
+++ b/src/library/tier1.c
@@ -2191,7 +2191,7 @@ compute_convex_hull(bwc_encoded_cblk *const encoded_codeblock, double *const mse
 
    h           = hull;
    hlast       = 0;
-   lambda [0]  = 0xFFFFFFFFFFFFFFFF;
+   lambda [0]  = (double)0xFFFFFFFFFFFFFFFF;
 
    for(i = 0; i < encoded_codeblock->Z; ++i)
    {
@@ -2233,7 +2233,7 @@ compute_convex_hull(bwc_encoded_cblk *const encoded_codeblock, double *const mse
             }
             else
             {
-               lambda[hlast] = 0xFFFFFFFFFFFFFFFF;
+               lambda[hlast] = (double)0xFFFFFFFFFFFFFFFF;
             }
          }
          else