diff --git a/tests/sm9test.c b/tests/sm9test.c
index ef9c6ddd..b8281dce 100644
--- a/tests/sm9test.c
+++ b/tests/sm9test.c
@@ -617,7 +617,11 @@ err:
 }
 
 #define hex_ks		"000130E78459D78545CB54C587E02CF480CE0B66340F319F348A1D5B1F2DC5F4"
-#define hex_ds		"A5702F05CF1315305E2D6EB64B0DEB923DB1A0BCF0CAFF90523AC8754AA69820-78559A844411F9825C109F5EE3F52D720DD01785392A727BB1556952B2B013D3"
+
+#define hex_ds \
+	"A5702F05CF1315305E2D6EB64B0DEB923DB1A0BCF0CAFF90523AC8754AA69820\n" \
+	"78559A844411F9825C109F5EE3F52D720DD01785392A727BB1556952B2B013D3"
+
 
 int test_sm9_z256_sign()
 {