1 files changed, 1 insertions, 1 deletions
diff --git a/src/proc_stat.c b/src/proc_stat.c
index 907b659d0..d1aefb73e 100644
--- a/src/proc_stat.c
+++ b/src/proc_stat.c
@@ -54,7 +54,7 @@ static int read_per_core_files(struct cpu_chart *all_cpu_charts, size_t len, siz
         }
 
         ssize_t ret = read(f->fd, buf, 50);
-        if(unlikely(ret == -1)) {
+        if(unlikely(ret < 0)) {
             // cannot read that file
 
             error("Cannot read file '%s'", f->filename);