diff --git a/src/common/rclconfig.cpp b/src/common/rclconfig.cpp
index a5084af8..e69f76b6 100644
--- a/src/common/rclconfig.cpp
+++ b/src/common/rclconfig.cpp
@@ -1382,6 +1382,8 @@ bool RclConfig::getUncompressor(const string &mtype, vector<string>& cmd) const
         } else {
             *it = findFilter(*it);
         }
+    } else {
+        it++;
     }
     
     cmd.insert(cmd.end(), it, tokens.end());