diff --git a/src/plugin_crc16.c b/src/plugin_crc16.c
index 47123fe..afa27ae 100644
--- a/src/plugin_crc16.c
+++ b/src/plugin_crc16.c
@@ -10,9 +10,9 @@ const char* checkbrute_version()
     return "0.1";
 }
 
-uint64_t checkbrute_hash64(unsigned char* data, size_t size)
+uint32_t checkbrute_hash32(unsigned char* data, size_t size)
 {
-    return (uint64_t)crc_16(data, size);
+    return crc_16(data, size);
 }
 
 int checkbrute_hashsz()
diff --git a/src/plugin_crc32.c b/src/plugin_crc32.c
index 6e73a75..a39ef27 100644
--- a/src/plugin_crc32.c
+++ b/src/plugin_crc32.c
@@ -10,9 +10,9 @@ const char* checkbrute_version()
     return "0.1";
 }
 
-uint64_t checkbrute_hash64(unsigned char* data, size_t size)
+uint32_t checkbrute_hash32(unsigned char* data, size_t size)
 {
-    return (uint64_t)crc_32(data, size);
+    return crc_32(data, size);
 }
 
 int checkbrute_hashsz()