diff --git a/tommyds/tommyhash.c b/tommyds/tommyhash.c
index 71c4ef36..dd7546c5 100644
--- a/tommyds/tommyhash.c
+++ b/tommyds/tommyhash.c
@@ -165,7 +165,7 @@ tommy_uint64_t tommy_hash_u64(tommy_uint64_t init_val, const void* void_key, tom
 	return c + ((tommy_uint64_t)b << 32);
 }
 
-tommy_uint32_t tommy_strhash_u32(tommy_uint64_t init_val, const void* void_key)
+tommy_uint32_t tommy_strhash_u32(tommy_uint32_t init_val, const void* void_key)
 {
 	const unsigned char* key = tommy_cast(const unsigned char*, void_key);
 	tommy_uint32_t a, b, c;
diff --git a/tommyds/tommyhash.h b/tommyds/tommyhash.h
index e9bdba0f..0715fbec 100644
--- a/tommyds/tommyhash.h
+++ b/tommyds/tommyhash.h
@@ -93,7 +93,7 @@ tommy_uint64_t tommy_hash_u64(tommy_uint64_t init_val, const void* void_key, tom
  * This function is endianness independent.
  * \return The hash value of 32 bits.
  */
-tommy_uint32_t tommy_strhash_u32(tommy_uint64_t init_val, const void* void_key);
+tommy_uint32_t tommy_strhash_u32(tommy_uint32_t init_val, const void* void_key);
 
 /**
  * Integer reversible hash function for 32 bits.