diff --git a/code/modules/mob/living/carbon/human/life.dm b/code/modules/mob/living/carbon/human/life.dm
index 3ce0c85ef1c..9b2b0234e44 100644
--- a/code/modules/mob/living/carbon/human/life.dm
+++ b/code/modules/mob/living/carbon/human/life.dm
@@ -1032,7 +1032,7 @@
 			adjustHalLoss(-1)
 
 		if (drowsyness)
-			drowsyness--
+			drowsyness = max(0, drowsyness - 1)
 			eye_blurry = max(2, eye_blurry)
 			if (prob(5))
 				sleeping += 1