diff --git a/src/exception.cpp b/src/exception.cpp
index bd04f8e..01d2615 100644
--- a/src/exception.cpp
+++ b/src/exception.cpp
@@ -239,7 +239,6 @@ namespace fc
                   ss << "<- exception in to_string.\n";
                }
          }
-      return ss.str();
       } catch( std::bad_alloc& ) {
          throw;
       } catch( ... ) {