diff --git a/libopenjpeg/t2.c b/libopenjpeg/t2.c
index b6995f29..232a5437 100644
--- a/libopenjpeg/t2.c
+++ b/libopenjpeg/t2.c
@@ -568,7 +568,7 @@ static int t2_decode_packet(opj_t2_t* t2, unsigned char *src, int len, opj_tcd_t
 
 #endif /* USE_JPWL */
 				
-				cblk->data = (unsigned char*) opj_realloc(cblk->data, (cblk->len + seg->newlen) * sizeof(unsigned char*));
+				cblk->data = (unsigned char*) opj_realloc(cblk->data, (cblk->len + seg->newlen) * sizeof(unsigned char));
 				memcpy(cblk->data + cblk->len, c, seg->newlen);
 				if (seg->numpasses == 0) {
 					seg->data = &cblk->data;