diff --git a/src/util/warning.cpp b/src/util/warning.cpp
index d4de28782..10f18c21c 100644
--- a/src/util/warning.cpp
+++ b/src/util/warning.cpp
@@ -62,7 +62,6 @@ static bool g_warning_msgs   = true;
 static bool g_use_std_stdout = false;
 static std::ostream* g_error_stream = nullptr;
 static std::ostream* g_warning_stream = nullptr;
-static bool g_show_error_msg_prefix = true;
 
 void send_warnings_to_stdout(bool flag) {
     g_use_std_stdout = flag;
@@ -80,10 +79,6 @@ void set_warning_stream(std::ostream* strm) {
     g_warning_stream = strm;
 }
 
-void disable_error_msg_prefix() {
-    g_show_error_msg_prefix = false;
-}
-
 void format2ostream(std::ostream & out, char const* msg, va_list args) {
     svector<char>  buff;
     BEGIN_ERR_HANDLER();
diff --git a/src/util/warning.h b/src/util/warning.h
index 15f1a1757..629c357fa 100644
--- a/src/util/warning.h
+++ b/src/util/warning.h
@@ -31,8 +31,6 @@ void set_warning_stream(std::ostream* strm);
 
 void warning_msg(const char * msg, ...);
 
-void disable_error_msg_prefix();
-
 void format2ostream(std::ostream& out, char const* fmt, va_list args);
 
 class warning_displayer {