diff --git a/tests/ts/misc/fallocate b/tests/ts/misc/fallocate
index 2f77ee928..ec3d2d2f8 100755
--- a/tests/ts/misc/fallocate
+++ b/tests/ts/misc/fallocate
@@ -30,7 +30,7 @@ else
 	# fs type of $TS_OUTDIR, could be used to skip this test early
 	fs_type=$(${TS_CMD_FINDMNT} -n -o FSTYPE -T ${TS_OUTDIR})
 
-	grep -qi "fallocate: fallocate failed:.*not supported" $TS_OUTPUT \
+	grep -qi "fallocate: fallocate failed:.*not supported" $TS_ERRLOG \
 		&& ts_skip "'${fs_type}' not supported"
 fi