diff --git a/common/StringUtil.cpp b/common/StringUtil.cpp
index b1269bf46..bba3433fb 100644
--- a/common/StringUtil.cpp
+++ b/common/StringUtil.cpp
@@ -126,27 +126,6 @@ bool strn0cpyt(char* dest, const char* source, uint32 size) {
 	return (bool) (source[strlen(dest)] == 0);
 }
 
-const char *MakeUpperString(const char *source) {
-	static char str[128];
-	if (!source)
-		return nullptr;
-	MakeUpperString(source, str);
-	return str;
-}
-
-void MakeUpperString(const char *source, char *target) {
-	if (!source || !target) {
-	*target=0;
-		return;
-	}
-	while (*source)
-	{
-		*target = toupper(*source);
-		target++;source++;
-	}
-	*target = 0;
-}
-
 const char *MakeLowerString(const char *source) {
 	static char str[128];
 	if (!source)
diff --git a/common/StringUtil.h b/common/StringUtil.h
index 423201247..bbd9d43ba 100644
--- a/common/StringUtil.h
+++ b/common/StringUtil.h
@@ -23,19 +23,9 @@
 
 void vStringFormat(std::string& output, const char* format, va_list args);
 void StringFormat(std::string& output, const char* format, ...);
-//////////////////////////////////////////////////////////////////////
-//
-//  MakeUpperString
-//   i     : source - allocated null-terminated string
-//   return: pointer to static buffer with the target string
-const char *MakeUpperString(const char *source);
+
 const char *MakeLowerString(const char *source);
-//////////////////////////////////////////////////////////////////////
-//
-//  MakeUpperString
-//   i : source - allocated null-terminated string
-//   io: target - allocated buffer, at least of size strlen(source)+1
-void MakeUpperString(const char *source, char *target);
+
 void MakeLowerString(const char *source, char *target);