diff --git a/src/mixid.cpp b/src/mixid.cpp
index 848132f..3dd4d65 100644
--- a/src/mixid.cpp
+++ b/src/mixid.cpp
@@ -8,7 +8,7 @@ namespace MixID
 {
     namespace
     {
-        int32_t crc_table[256] = {
+        uint32_t crc_table[256] = {
             0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
             0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
             0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
@@ -130,4 +130,4 @@ namespace MixID
     {
         return !strncmp(fname.c_str(), marker, strlen(marker));
     }
-}
\ No newline at end of file
+}