diff --git a/cf/check-symbols.sh b/cf/check-symbols.sh
index cdadd9077..2e78b9396 100644
--- a/cf/check-symbols.sh
+++ b/cf/check-symbols.sh
@@ -30,5 +30,5 @@ done
 
 (nm .libs/lib${lib}.a || nm .libs/lib${lib}.so*)  |
 awk "BEGIN { stat = 0 }
-NF == 3 && \$2 ~ /[A-Z]/ && \$2 !~ /U/ && $symbols { printf \"%s should not be exported\\n\", \$3; ++stat } END { exit stat }"
+NF == 3 && \$2 ~ /[A-Z]/ && \$2 !~ /[UF]/ && $symbols { printf \"%s should not be exported\\n\", \$3; ++stat } END { exit stat }"