diff --git a/lib/runtime.s b/lib/runtime.s
index a230e09..ce60b8d 100644
--- a/lib/runtime.s
+++ b/lib/runtime.s
@@ -1787,6 +1787,7 @@ MAV_L:
 	CMPU NE
 	CBRANCH MAV_L       ; if not equal, loop
 MAX_XT:
+	DROP	; drop chunk ptr
 	LOAD 0	; put result value on stack
 	FPADJ 4
 	RET