diff --git a/src/cmd/ksh93/tests/leaks.sh b/src/cmd/ksh93/tests/leaks.sh
index 0f50da2da..fb6ed3b4f 100755
--- a/src/cmd/ksh93/tests/leaks.sh
+++ b/src/cmd/ksh93/tests/leaks.sh
@@ -37,7 +37,7 @@ then	N=512			# number of iterations for each test
 elif	[[ -f /proc/$$/stat && $(uname) == Linux ]]
 then	N=2048			# number of iterations for each test
 	unit=bytes
-	tolerance=$((4*N))	# tolerate 4 bytes per iteration to account for malloc artefacts
+	tolerance=$((6*N))	# tolerate 6 bytes per iteration to account for malloc artefacts
 	function getmem
 	{
 		cut -f 23 -d ' ' </proc/$$/stat