diff --git a/src/common/string_util.cpp b/src/common/string_util.cpp
index 0027888c7..f3ad3d68a 100644
--- a/src/common/string_util.cpp
+++ b/src/common/string_util.cpp
@@ -34,18 +34,6 @@ std::string ToUpper(std::string str) {
     return str;
 }
 
-// faster than sscanf
-bool AsciiToHex(const char* _szValue, u32& result) {
-    char* endptr = nullptr;
-    const u32 value = strtoul(_szValue, &endptr, 16);
-
-    if (!endptr || *endptr)
-        return false;
-
-    result = value;
-    return true;
-}
-
 // For Debugging. Read out an u8 array.
 std::string ArrayToString(const u8* data, size_t size, int line_len, bool spaces) {
     std::ostringstream oss;
diff --git a/src/common/string_util.h b/src/common/string_util.h
index 1f5a383cb..daa071f83 100644
--- a/src/common/string_util.h
+++ b/src/common/string_util.h
@@ -57,9 +57,6 @@ static bool TryParse(const std::string& str, N* const output) {
         return false;
 }
 
-// TODO: kill this
-bool AsciiToHex(const char* _szValue, u32& result);
-
 std::string TabsToSpaces(int tab_size, const std::string& in);
 
 void SplitString(const std::string& str, char delim, std::vector<std::string>& output);