diff --git a/Adapter.cc b/Adapter.cc
index b9ee427..d2479cd 100644
--- a/Adapter.cc
+++ b/Adapter.cc
@@ -17,6 +17,8 @@ namespace pEp {
             return;
         if (status >= 0x400 && status <= 0x4ff)
             return;
+        if (status == PEP_STATEMACHINE_CANNOT_SEND)
+            return;
         if (status == PEP_OUT_OF_MEMORY)
             throw bad_alloc();
         if (status == PEP_ILLEGAL_VALUE)