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-rw-r--r--newlib/libc/include/stdlib.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/newlib/libc/include/stdlib.h b/newlib/libc/include/stdlib.h
index 9bee3b187..5f2f60889 100644
--- a/newlib/libc/include/stdlib.h
+++ b/newlib/libc/include/stdlib.h
@@ -174,8 +174,8 @@ unsigned long long _EXFUN(_strtoull_r,(struct _reent *, const char *__n, char **
#ifndef __CYGWIN__
_VOID _EXFUN(cfree,(_PTR));
-void _EXFUN(unsetenv,(const char *__string));
-void _EXFUN(_unsetenv_r,(struct _reent *, const char *__string));
+int _EXFUN(unsetenv,(const char *__string));
+int _EXFUN(_unsetenv_r,(struct _reent *, const char *__string));
#endif
#endif /* ! __STRICT_ANSI__ */