1 files changed, 2 insertions, 1 deletions

diff --git a/src/fsec-optimize/main.c b/src/fsec-optimize/main.c
index f4300f350..80ca098cb 100644
--- a/src/fsec-optimize/main.c
+++ b/src/fsec-optimize/main.c
@@ -87,7 +87,8 @@ printf("\n");
 
         return 0;
 errexit:
-        close(fd);
+        if (fd != -1)
+                close(fd);
         fprintf(stderr, "Error: cannot read %s\n", fname);
         exit(1);