diff --git a/src/posix/platform/settings.cpp b/src/posix/platform/settings.cpp
index 73925fe21500..a0ccd39f0acb 100644
--- a/src/posix/platform/settings.cpp
+++ b/src/posix/platform/settings.cpp
@@ -474,12 +474,18 @@ otError PlatformSettingsDelete(otInstance *aInstance, uint16_t aKey, int aIndex,
         }
 
         rval = write(swapFd, &key, sizeof(key));
-        assert(rval == sizeof(key));
-        VerifyOrDie(rval == sizeof(key), OT_EXIT_FAILURE);
+        if(rval !=  sizeof(key))
+        {
+            swapDiscard(aInstance, swapFd);
+            VerifyOrDie(rval == sizeof(key), OT_EXIT_FAILURE);
+	}
 
         rval = write(swapFd, &length, sizeof(length));
-        assert(rval == sizeof(length));
-        VerifyOrDie(rval == sizeof(length), OT_EXIT_FAILURE);
+        if(rval !=  sizeof(length))
+        {
+            swapDiscard(aInstance, swapFd);
+            VerifyOrDie(rval == sizeof(length), OT_EXIT_FAILURE);
+	}
 
         swapWrite(aInstance, swapFd, length);
     }