diff --git a/include/sbi/riscv_encoding.h b/include/sbi/riscv_encoding.h
index 477fa3a..050674a 100644
--- a/include/sbi/riscv_encoding.h
+++ b/include/sbi/riscv_encoding.h
@@ -207,7 +207,7 @@
 
 #endif
 
-#define MHPMEVENT_SSCOF_MASK		_ULL(0xFFFF000000000000)
+#define MHPMEVENT_SSCOF_MASK		_ULL(0xFC00000000000000)
 
 #define ENVCFG_STCE			(_ULL(1) << 63)
 #define ENVCFG_PBMTE			(_ULL(1) << 62)