diff --git a/src/filters/rcl7z b/src/filters/rcl7z
index 9dc167ab..5c7e55ee 100755
--- a/src/filters/rcl7z
+++ b/src/filters/rcl7z
@@ -14,7 +14,7 @@ import rclexecm
 try:
     from py7zlib import Archive7z
 except:
-    print("RECFILTERROR HELPERNOTFOUND python3:py7zlib")
+    print("RECFILTERROR HELPERNOTFOUND python3:pylzma")
     sys.exit(1);
 
 try: