diff --git a/lib/lib_gnupg.sh b/lib/lib_gnupg.sh
index 381c716..1737789 100644
--- a/lib/lib_gnupg.sh
+++ b/lib/lib_gnupg.sh
@@ -116,7 +116,7 @@ EOF
       shred -fzu -n 5 -- "${VAR_TMP_SECRET}/${VAR_SIGNING_KEY}"
     fi
 
-    if [[ -n "${VAR_SIGNING_KEY}" ]]; then
+    if [[ -n "${VAR_SIGNING_CA}" ]]; then
       shred -fzu -n 5 -- "${VAR_TMP_SECRET}/${VAR_SIGNING_CA}"
     fi