diff --git a/src/script_pokemon_util.c b/src/script_pokemon_util.c
index 31e40fa31a6f..86eed1914372 100644
--- a/src/script_pokemon_util.c
+++ b/src/script_pokemon_util.c
@@ -446,12 +446,12 @@ void ScrCmd_givemon(struct ScriptContext *ctx)
     u8 speedEv        = PARSE_FLAG(8, 0);
     u8 spAtkEv        = PARSE_FLAG(9, 0);
     u8 spDefEv        = PARSE_FLAG(10, 0);
-    u8 hpIv           = PARSE_FLAG(11, Random() % MAX_PER_STAT_IVS + 1);
-    u8 atkIv          = PARSE_FLAG(12, Random() % MAX_PER_STAT_IVS + 1);
-    u8 defIv          = PARSE_FLAG(13, Random() % MAX_PER_STAT_IVS + 1);
-    u8 speedIv        = PARSE_FLAG(14, Random() % MAX_PER_STAT_IVS + 1);
-    u8 spAtkIv        = PARSE_FLAG(15, Random() % MAX_PER_STAT_IVS + 1);
-    u8 spDefIv        = PARSE_FLAG(16, Random() % MAX_PER_STAT_IVS + 1);
+    u8 hpIv           = PARSE_FLAG(11, Random() % (MAX_PER_STAT_IVS + 1));
+    u8 atkIv          = PARSE_FLAG(12, Random() % (MAX_PER_STAT_IVS + 1));
+    u8 defIv          = PARSE_FLAG(13, Random() % (MAX_PER_STAT_IVS + 1));
+    u8 speedIv        = PARSE_FLAG(14, Random() % (MAX_PER_STAT_IVS + 1));
+    u8 spAtkIv        = PARSE_FLAG(15, Random() % (MAX_PER_STAT_IVS + 1));
+    u8 spDefIv        = PARSE_FLAG(16, Random() % (MAX_PER_STAT_IVS + 1));
     u16 move1         = PARSE_FLAG(17, MOVE_NONE);
     u16 move2         = PARSE_FLAG(18, MOVE_NONE);
     u16 move3         = PARSE_FLAG(19, MOVE_NONE);