diff --git a/scan/sane/sclpml.c b/scan/sane/sclpml.c
index 0ce43bf..05c04bb 100644
--- a/scan/sane/sclpml.c
+++ b/scan/sane/sclpml.c
@@ -2071,6 +2071,10 @@ abort:
             {
                 free( ( void * ) session->saneDevice.model );
             }
+            if (session->mfpdtf)
+            {
+                MfpdtfDeallocate(session->mfpdtf);
+            }
             free( session );
             session = NULL;
         }
@@ -2100,6 +2104,19 @@ void sclpml_close(SANE_Handle handle)
        hpmud_close_device(hpaio->deviceid);
        hpaio->deviceid = -1;
     }
+
+    if(hpaio->saneDevice.name)
+    {
+        free( ( void * ) hpaio->saneDevice.name );
+    }
+    if(hpaio->saneDevice.model)
+    {
+        free( ( void * ) hpaio->saneDevice.model );
+    }
+    if (hpaio->mfpdtf)
+    {
+        MfpdtfDeallocate(hpaio->mfpdtf);
+    }
     free(hpaio);
     session = NULL;
 }