diff --git a/sys/dev/drm/amd/powerplay/hwmgr/vega12_hwmgr.c b/sys/dev/drm/amd/powerplay/hwmgr/vega12_hwmgr.c
--- a/sys/dev/drm/amd/powerplay/hwmgr/vega12_hwmgr.c
+++ b/sys/dev/drm/amd/powerplay/hwmgr/vega12_hwmgr.c
@@ -2111,7 +2111,7 @@
 			!(data->water_marks_bitmap & WaterMarksLoaded)) {
 		result = smum_smc_table_manager(hwmgr,
 						(uint8_t *)wm_table, TABLE_WATERMARKS, false);
-		PP_ASSERT_WITH_CODE(result, "Failed to update WMTABLE!", return EINVAL);
+		PP_ASSERT_WITH_CODE(!result, "Failed to update WMTABLE!", return EINVAL);
 		data->water_marks_bitmap |= WaterMarksLoaded;
 	}