diff --git a/shared/os-compatibility.c b/shared/os-compatibility.c
index 05999745..551f2a99 100644
--- a/shared/os-compatibility.c
+++ b/shared/os-compatibility.c
@@ -144,7 +144,7 @@ create_tmpfile_cloexec(char *tmpname)
  *
  * If the C library implements posix_fallocate(), it is used to
  * guarantee that disk space is available for the file at the
- * given size. If disk space is insufficent, errno is set to ENOSPC.
+ * given size. If disk space is insufficient, errno is set to ENOSPC.
  * If posix_fallocate() is not supported, program may receive
  * SIGBUS on accessing mmap()'ed file contents instead.
  */