1 files changed, 3 insertions, 3 deletions
diff --git a/lib/info_simple.cc b/lib/info_simple.cc
index a3db393..9c78ae8 100644
--- a/lib/info_simple.cc
+++ b/lib/info_simple.cc
@@ -39,7 +39,7 @@ InfoSimple::~InfoSimple()
   pthread_mutex_destroy(&mutex);
 }
 
-void InfoSimple::error(char *fmt, ...)
+void InfoSimple::error(const char *fmt, ...)
 {
   char buf[1024];
 
@@ -57,7 +57,7 @@ void InfoSimple::error(char *fmt, ...)
   fprintf(stderr, "Error: %s\n", buf);
 }
 
-void InfoSimple::warn(char *fmt, ...)
+void InfoSimple::warn(const char *fmt, ...)
 {
   char buf[1024];
 
@@ -75,7 +75,7 @@ void InfoSimple::warn(char *fmt, ...)
   fprintf(stderr, "Warning: %s\n", buf);
 }
 
-void InfoSimple::info(char *fmt, ...)
+void InfoSimple::info(const char *fmt, ...)
 {
   char buf[1024];