diff --git a/zebra/if_sysctl.c b/zebra/if_sysctl.c
index 1441dfc..7ad570f 100644
--- a/zebra/if_sysctl.c
+++ b/zebra/if_sysctl.c
@@ -52,7 +52,7 @@
   /* Query buffer size. */
   if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0) 
     {
-      zlog_warn ("sysctl() error by %s", strerror (errno));
+      zlog_warn ("sysctl() error by %s", safe_strerror (errno));
       return -1;
     }
 
@@ -62,7 +62,7 @@
   /* Fetch interface informations into allocated buffer. */
   if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0) 
     {
-      zlog (NULL, LOG_WARNING, "sysctl error by %s", strerror (errno));
+      zlog (NULL, LOG_WARNING, "sysctl error by %s", safe_strerror (errno));
       return -1;
     }
 
@@ -108,7 +108,7 @@
   /* Query buffer size. */
   if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0) 
     {
-      zlog (NULL, LOG_WARNING, "sysctl() error by %s", strerror (errno));
+      zlog (NULL, LOG_WARNING, "sysctl() error by %s", safe_strerror (errno));
       return;
     }
 
@@ -118,7 +118,7 @@
   /* Fetch interface informations into allocated buffer. */
   if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0) 
     {
-      zlog (NULL, LOG_WARNING, "sysctl error by %s", strerror (errno));
+      zlog (NULL, LOG_WARNING, "sysctl error by %s", safe_strerror (errno));
       return;
     }