1 files changed, 1 insertions, 1 deletions

diff --git a/apps/plugins/viewer.c b/apps/plugins/viewer.c
index 5b84c08694..046c76523a 100644
--- a/apps/plugins/viewer.c
+++ b/apps/plugins/viewer.c
@@ -1193,7 +1193,7 @@ static bool viewer_init(void)
 #endif
 
     fd = rb->open(file_name, O_RDONLY);
-    if (fd==-1)
+    if (fd < 0)
         return false;
 
     file_size = rb->filesize(fd);