diff --git a/src/custom.cpp b/src/custom.cpp
index 5938c5e0c..5917564e8 100644
--- a/src/custom.cpp
+++ b/src/custom.cpp
@@ -659,8 +659,8 @@ int handleCustomReport (const std::string& report, std::string &outs)
       if (maxrows)
         out << ", " << maxrows << " shown";
 
-      if (maxlines < table.rowCount ())
-        out << ", truncated to " << maxlines-1 << " lines";
+      if (maxlines && maxlines < table.rowCount ())
+        out << ", truncated to " << maxlines - 1 << " lines";
 
       out << std::endl;
     }