diff --git a/modules/hekate_libsys_minerva/mtc.h b/modules/hekate_libsys_minerva/mtc.h
index 07a9dc1..87f3709 100644
--- a/modules/hekate_libsys_minerva/mtc.h
+++ b/modules/hekate_libsys_minerva/mtc.h
@@ -53,8 +53,8 @@
 
 typedef struct
 {
-	s32 rate_to;
-	s32 rate_from;
+	u32 rate_to;
+	u32 rate_from;
 	emc_table_t *mtc_table;
 	u32 table_entries;
 	emc_table_t *current_emc_table;
diff --git a/modules/hekate_libsys_minerva/sys_sdrammtc.c b/modules/hekate_libsys_minerva/sys_sdrammtc.c
index a2a0c9b..6b3ae8b 100644
--- a/modules/hekate_libsys_minerva/sys_sdrammtc.c
+++ b/modules/hekate_libsys_minerva/sys_sdrammtc.c
@@ -3604,7 +3604,7 @@ void _minerva_do_over_temp_compensation(mtc_config_t *mtc_cfg)
 
 	u32 dram_temp = _get_dram_temperature();
 
-	if (mtc_cfg->prev_temp == dram_temp || dram_temp < 0)
+	if (mtc_cfg->prev_temp == dram_temp || dram_temp == (u32)-1)
 		return;
 
 	u32 refr = mtc_cfg->current_emc_table->burst_regs.emc_refresh_idx;