diff --git a/pgo/full-inner.sh b/pgo/full-inner.sh
index 4e8265fd..2125885d 100755
--- a/pgo/full-inner.sh
+++ b/pgo/full-inner.sh
@@ -8,7 +8,7 @@ blddir=$(realpath "${2}")
 . "${srcdir}"/pgo/options
 
 pgo_data=$(mktemp)
-trap "rm -f ${pgo_data}" EXIT INT HUP TERM
+trap "rm -f '${pgo_data}'" EXIT INT HUP TERM
 
 rm -f "${blddir}"/pgo-ok