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-rw-r--r--locale/programs/xstrdup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/locale/programs/xstrdup.c b/locale/programs/xstrdup.c
index 3947dd19ce..6510f960ae 100644
--- a/locale/programs/xstrdup.c
+++ b/locale/programs/xstrdup.c
@@ -21,7 +21,7 @@
 # include <config.h>
 #endif
 
-#if defined STDC_HEADERS || defined HAVE_STRING_H || __LIBC
+#if defined STDC_HEADERS || defined HAVE_STRING_H || _LIBC
 # include <string.h>
 #else
 # include <strings.h>