diff --git a/lib/shared_memory.cpp b/lib/shared_memory.cpp
index 6da6525b..2f69a4e6 100644
--- a/lib/shared_memory.cpp
+++ b/lib/shared_memory.cpp
@@ -448,7 +448,7 @@ namespace IPC {
       handle = shm_open(name.c_str(), (master ? O_CREAT | O_EXCL : 0) | O_RDWR, ACCESSPERMS);
       if (handle == -1) {
         if (master) {
-          ERROR_MSG("Overwriting old page for %s", name.c_str());
+          if (len > 1){ERROR_MSG("Overwriting old page for %s", name.c_str());}
           handle = shm_open(name.c_str(), O_CREAT | O_RDWR, ACCESSPERMS);
         } else {
           int i = 0;