diff --git a/coreapi/call_log.c b/coreapi/call_log.c
index 811f8c437..a1bd835ce 100644
--- a/coreapi/call_log.c
+++ b/coreapi/call_log.c
@@ -26,6 +26,21 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  * Internal functions                                                          *
  ******************************************************************************/
 
+/*prevent a gcc bug with %c*/
+static size_t my_strftime(char *s, size_t max, const char  *fmt,  const struct tm *tm){
+	return strftime(s, max, fmt, tm);
+}
+
+static time_t string_to_time(const char *date){
+#ifndef WIN32
+	struct tm tmtime={0};
+	strptime(date,"%c",&tmtime);
+	return mktime(&tmtime);
+#else
+	return 0;
+#endif
+}
+
 static void set_call_log_date(LinphoneCallLog *cl, time_t start_time){
 	struct tm loctime;
 #ifdef WIN32
diff --git a/coreapi/linphonecore.c b/coreapi/linphonecore.c
index 985b23d48..d88fc6974 100644
--- a/coreapi/linphonecore.c
+++ b/coreapi/linphonecore.c
@@ -102,21 +102,6 @@ int lc_callback_obj_invoke(LCCallbackObj *obj, LinphoneCore *lc){
 }
 
 
-/*prevent a gcc bug with %c*/
-static size_t my_strftime(char *s, size_t max, const char  *fmt,  const struct tm *tm){
-	return strftime(s, max, fmt, tm);
-}
-
-static time_t string_to_time(const char *date){
-#ifndef WIN32
-	struct tm tmtime={0};
-	strptime(date,"%c",&tmtime);
-	return mktime(&tmtime);
-#else
-	return 0;
-#endif
-}
-
 /**
  * Returns TRUE if the LinphoneCall asked to autoanswer
  *