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-rw-r--r--newlib/libc/sys/rtems/sys/syslimits.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/newlib/libc/sys/rtems/sys/syslimits.h b/newlib/libc/sys/rtems/sys/syslimits.h
index 74c4dd273..2295afe34 100644
--- a/newlib/libc/sys/rtems/sys/syslimits.h
+++ b/newlib/libc/sys/rtems/sys/syslimits.h
@@ -45,7 +45,7 @@
#define MAX_CANON 255 /* max bytes in term canon input line */
#define MAX_INPUT 255 /* max bytes in terminal input */
#define NAME_MAX 255 /* max bytes in a file name */
-#define NGROUPS_MAX 16 /* max supplemental group id's */
+#define NGROUPS_MAX 15 /* max supplemental group id's */
#ifndef OPEN_MAX
#define OPEN_MAX 64 /* max open files per process */
#endif