diff --git a/strings.c b/strings.c
index 92cfa2d6f2..3e1e9462b4 100644
--- a/strings.c
+++ b/strings.c
@@ -167,8 +167,8 @@ static const char *GetStringPtr(StringID string)
 // The highest 8 bits of string contain the "case index".
 // These 8 bits will only be set when FormatString wants to print
 // the string in a different case. No one else except FormatString
-// should set those bits.
-char *GetStringWithArgs(char *buffr, StringID string, const int32 *argv)
+// should set those bits, therefore string CANNOT be StringID, but uint32.
+char *GetStringWithArgs(char *buffr, uint string, const int32 *argv)
 {
 	uint index = GB(string,  0, 11);
 	uint tab   = GB(string, 11,  5);
diff --git a/strings.h b/strings.h
index 063d5a365e..f984bd4802 100644
--- a/strings.h
+++ b/strings.h
@@ -12,7 +12,7 @@ static inline char* InlineString(char* buf, uint16 string)
 }
 
 char *GetString(char *buffr, uint16 string);
-char *GetStringWithArgs(char *buffr, uint16 string, const int32 *argv);
+char *GetStringWithArgs(char *buffr, uint string, const int32 *argv);
 
 extern char _userstring[128];