diff --git a/include/mcl/bn.h b/include/mcl/bn.h
index 20212da..4221989 100644
--- a/include/mcl/bn.h
+++ b/include/mcl/bn.h
@@ -75,30 +75,30 @@ typedef struct mclBnFp2 mclBnFp2;
 
 #else
 
+typedef struct {
+	uint64_t d[MCLBN_FP_UNIT_SIZE];
+} mclBnFp;
+
+typedef struct {
+	mclBnFp d[2];
+} mclBnFp2;
+
 typedef struct {
 	uint64_t d[MCLBN_FR_UNIT_SIZE];
 } mclBnFr;
 
 typedef struct {
-	uint64_t d[MCLBN_FP_UNIT_SIZE * 3];
+	mclBnFp x, y, z;
 } mclBnG1;
 
 typedef struct {
-	uint64_t d[MCLBN_FP_UNIT_SIZE * 2 * 3];
+	mclBnFp2 x, y, z;
 } mclBnG2;
 
 typedef struct {
-	uint64_t d[MCLBN_FP_UNIT_SIZE * 12];
+	mclBnFp d[12];
 } mclBnGT;
 
-typedef struct {
-	uint64_t d[MCLBN_FP_UNIT_SIZE];
-} mclBnFp;
-
-typedef struct {
-	mclBnFp d[2];
-} mclBnFp2;
-
 #endif
 
 #include <mcl/curve_type.h>