diff --git a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm
index 4818dc808f..a0a75e4664 100644
--- a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm
+++ b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm
@@ -544,7 +544,7 @@
 		M.hallucination = max(M.hallucination, 10)
 	
 	//One of the levofloxacin side effects is 'spontaneous tendon rupture', which I'll immitate here. 1:1000 chance, so, pretty darn rare.
-	if(ishuman(M) && rand(1,1000) == 1)
+	if(ishuman(M) && rand(1,10000) == 1)
 		var/mob/living/carbon/human/H = M
 		var/obj/item/organ/external/eo = pick(H.organs) //Misleading variable name, 'organs' is only external organs
 		eo.fracture()