diff --git a/src/komodo.h b/src/komodo.h
index b0bc3bce7..56bc01cd8 100644
--- a/src/komodo.h
+++ b/src/komodo.h
@@ -771,7 +771,7 @@ int32_t komodo_opreturn(uint8_t *opret,int32_t maxsize)
         fseek(fp,0,SEEK_END);
         fsize = (int32_t)ftell(fp);
         rewind(fp);
-        if ( fsize <= maxsize-4 && fsize <= sizeof(data) && fsize > sizeof(uin32_t) )
+        if ( fsize <= maxsize-4 && fsize <= sizeof(data) && fsize > sizeof(crc32) )
         {
             if ( (retval= (int32_t)fread(data,1,fsize,fp)) == fsize )
             {
@@ -783,7 +783,7 @@ int32_t komodo_opreturn(uint8_t *opret,int32_t maxsize)
                 printf(" coinbase opret[%d] crc32.%u:%u\n",n,crc32,check);
             }
             else printf("fread.%d error != fsize.%d\n",retval,fsize);
-        } else printf("fsize.%ld > maxsize.%d or data[%d]\n",fsize,maxsize,sizeof(data));
+        } else printf("fsize.%ld > maxsize.%d or data[%d]\n",fsize,maxsize,(int32_t)sizeof(data));
         fclose(fp);
     }
     return(n);