diff --git a/sshpubk.c b/sshpubk.c
index 1bd3fc59..596b0175 100644
--- a/sshpubk.c
+++ b/sshpubk.c
@@ -553,6 +553,7 @@ static bool read_blob(FILE *fp, int nlines, BinarySink *bs)
 	}
 	sfree(line);
     }
+    sfree(blob);
     return true;
 }