diff --git a/erasure_code/ec_base.c b/erasure_code/ec_base.c
index eed3703..b5a1192 100644
--- a/erasure_code/ec_base.c
+++ b/erasure_code/ec_base.c
@@ -341,9 +341,9 @@ void gf_vect_mul_base(int len, unsigned char *a, unsigned char *src, unsigned ch
 }
 
 struct slver {
-	UINT16 snum;
-	UINT8 ver;
-	UINT8 core;
+	unsigned short snum;
+	unsigned char ver;
+	unsigned char core;
 };
 
 // Version info
diff --git a/erasure_code/ec_highlevel_func.c b/erasure_code/ec_highlevel_func.c
index 4c76061..6e05c46 100644
--- a/erasure_code/ec_highlevel_func.c
+++ b/erasure_code/ec_highlevel_func.c
@@ -324,9 +324,9 @@ void ec_encode_data_update_avx2(int len, int k, int rows, int vec_i, unsigned ch
 #endif //__x86_64__  || __i386__ || _M_X64 || _M_IX86
 
 struct slver {
-	UINT16 snum;
-	UINT8 ver;
-	UINT8 core;
+	unsigned short snum;
+	unsigned char ver;
+	unsigned char core;
 };
 
 // Version info