diff --git a/cf/check-symbols.sh b/cf/check-symbols.sh
index 38e934a27..a939754af 100644
--- a/cf/check-symbols.sh
+++ b/cf/check-symbols.sh
@@ -36,7 +36,7 @@ while test $# != 0 ;do
 done
 
 for a in "$@" $esym; do
-    symbols="\$3 !~ /^_?${a}/ ${symbols:+&&} ${symbols}"
+    symbols="\$3 !~ /^[_\.]?${a}/ ${symbols:+&&} ${symbols}"
 done
 
 # F filename, N debugsymbols, W weak symbols, U undefined