diff --git a/bin2ihex.c b/bin2ihex.c
index 8fa8c4e..9d5a2c8 100644
--- a/bin2ihex.c
+++ b/bin2ihex.c
@@ -103,7 +103,7 @@ argument_error:
         }
         ihex.flags |= IHEX_FLAG_ADDRESS_OVERFLOW;
     }
-    while ((count = fread(buf, 1, sizeof(buf), infile))) {
+    while ((count = (unsigned int) fread(buf, 1, sizeof(buf), infile))) {
         ihex_write_bytes(&ihex, buf, count);
     }
     ihex_end_write(&ihex);
diff --git a/ihex2bin.c b/ihex2bin.c
index 06e5580..15a2825 100644
--- a/ihex2bin.c
+++ b/ihex2bin.c
@@ -107,7 +107,7 @@ argument_error:
 
     ihex_read_at_address(&ihex, (ihex_address_t) address_offset);
     while (fgets(buf, sizeof(buf), infile)) {
-        count = strlen(buf);
+        count = (unsigned int) strlen(buf);
         ihex_read_bytes(&ihex, buf, count);
         line_number += (count && buf[count - 1] == '\n') ? 1 : 0;
     }
@@ -154,7 +154,7 @@ ihex_data_read (struct ihex_state *ihex, enum ihex_record_type type,
                         "Seeking from 0x%lx to 0x%lx on line %lu\n",
                         file_position, address, line_number);
             }
-            if (outfile == stdout || fseek(outfile, address, SEEK_SET)) {
+            if (outfile == stdout || fseek(outfile, (long) address, SEEK_SET)) {
                 if (file_position < address) {
                     // "seek" forward in stdout by writing NUL bytes
                     do {
diff --git a/kk_ihex_read.c b/kk_ihex_read.c
index 88f9d50..4194a3d 100644
--- a/kk_ihex_read.c
+++ b/kk_ihex_read.c
@@ -3,7 +3,7 @@
  *
  * See the header `kk_ihex.h` for instructions.
  *
- * Copyright (c) 2013 Kimmo Kulovesi, http://arkku.com/
+ * Copyright (c) 2013-2014 Kimmo Kulovesi, http://arkku.com/
  * Provided with absolutely no warranty, use at your own risk only.
  * Use and distribute freely, mark modified copies as such.
  */
@@ -82,7 +82,7 @@ ihex_end_read (struct ihex_state * const ihex) {
             ihex->address |= ((ihex_address_t) ihex->data[1]) << 16;
 #ifndef IHEX_DISABLE_SEGMENTS
         } else if (type == IHEX_EXTENDED_SEGMENT_ADDRESS_RECORD) {
-            ihex->segment = (ihex->data[0] << 8) | ihex->data[1];
+            ihex->segment = (ihex_segment_t) ((ihex->data[0] << 8) | ihex->data[1]);
 #endif
         }
     }
@@ -138,7 +138,7 @@ ihex_read_byte (struct ihex_state *ihex, int b) {
             b <<= 8;
         case (READ_ADDRESS_LSB_LOW >> 1):
             // low byte of 16-bit address
-            ihex->address |= b;
+            ihex->address |= (unsigned) b;
             break;
         case (READ_RECORD_TYPE_LOW >> 1):
             // record type
diff --git a/kk_ihex_write.c b/kk_ihex_write.c
index bf9ae6c..34a3756 100644
--- a/kk_ihex_write.c
+++ b/kk_ihex_write.c
@@ -3,7 +3,7 @@
  *
  * See the header `kk_ihex.h` for instructions.
  *
- * Copyright (c) 2013 Kimmo Kulovesi, http://arkku.com/
+ * Copyright (c) 2013-2014 Kimmo Kulovesi, http://arkku.com/
  * Provided with absolutely no warranty, use at your own risk only.
  * Use and distribute freely, mark modified copies as such.
  */
@@ -80,7 +80,7 @@ ihex_write_end_of_file (struct ihex_state * const ihex) {
     w = ihex_buffer_byte(w, 0); // address msb
     w = ihex_buffer_byte(w, 0); // address lsb
     w = ihex_buffer_byte(w, IHEX_END_OF_FILE_RECORD); // record type
-    w = ihex_buffer_byte(w, ~IHEX_END_OF_FILE_RECORD + 1); // checksum
+    w = ihex_buffer_byte(w, ~((unsigned int)IHEX_END_OF_FILE_RECORD) + 1U); // checksum
 #endif
     w = ihex_buffer_newline(w);
     ihex_flush_buffer(ihex, line_buffer, w);