diff --git a/include/pokemon.h b/include/pokemon.h
index 63c5c74eb..e48618328 100644
--- a/include/pokemon.h
+++ b/include/pokemon.h
@@ -363,7 +363,7 @@ struct Evolution
     | (((personality) & 0x00000003) >> 0)  \
 ) % NUM_UNOWN_FORMS)
 
-#define GET_SHINY_VALUE(otId, personality)HIHALF(otId) ^ LOHALF(otId) ^ HIHALF(personality) ^ LOHALF(personality)
+#define GET_SHINY_VALUE(otId, personality) (HIHALF(otId) ^ LOHALF(otId) ^ HIHALF(personality) ^ LOHALF(personality))
 
 extern u8 gPlayerPartyCount;
 extern struct Pokemon gPlayerParty[PARTY_SIZE];