diff --git a/ChangeLog b/ChangeLog
index 5dfdc38..fe043a0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -25,6 +25,7 @@ v.0.5dev (ongoing development)
  * add support for Iface and ProcSize screens for OS X / Darwin (Eric Pooch)
  * update & fix serialVFD driver (Stefan Herdler)
  + Hitachi SP14Q002 support & another connection type to sed1330 (Benjamin Wiedmann)
+ * replace obsolete index() by strchr() (Guillaume LECERF)
 
 v.0.5.1
  + config file support in lcdproc client (Andrew Foss)
diff --git a/clients/lcdproc/machine_Linux.c b/clients/lcdproc/machine_Linux.c
index e037064..4d22dbf 100644
--- a/clients/lcdproc/machine_Linux.c
+++ b/clients/lcdproc/machine_Linux.c
@@ -383,7 +383,7 @@ int machine_get_procs(LinkedList *procs)
 		char buf[128];
 
 		/* ignore everything in proc except process ids */
-		if (!index("1234567890", procdir->d_name[0]))
+		if (!strchr("1234567890", procdir->d_name[0]))
 			continue;
 
 		sprintf(buf, "/proc/%s/status", procdir->d_name);
diff --git a/clients/lcdproc/machine_SunOS.c b/clients/lcdproc/machine_SunOS.c
index 50f702b..c8cd908 100644
--- a/clients/lcdproc/machine_SunOS.c
+++ b/clients/lcdproc/machine_SunOS.c
@@ -300,7 +300,7 @@ int machine_get_procs(LinkedList *procs)
 	{
 		psinfo_t psinfo;
 
-		if (!index("1234567890", procdir->d_name[0]))
+		if (!strchr("1234567890", procdir->d_name[0]))
 			continue;
 
 		sprintf(buf, "/proc/%s/psinfo", procdir->d_name);