diff --git a/SM2-WWMM-(2).md b/SM2-WWMM-(2).md
index 8f66095..3d5eaa7 100644
--- a/SM2-WWMM-(2).md
+++ b/SM2-WWMM-(2).md
@@ -3,7 +3,7 @@
 ## SM2 P256 P表示
 SM2 256 的素数P=0xfffffffeffffffffffffffffffffffffffffffff00000000ffffffffffffffff，也可以表示为
 
-$p_0=0xFFFFFFFEFFFFFFFF$  
+$p_0=0xFFFFFFFFFFFFFFFF$  
 $p_1=0xFFFFFFFF00000000$  
 $p_2=0xFFFFFFFFFFFFFFFF$  
 $p_3=0xFFFFFFFEFFFFFFFF$