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-rw-r--r--src/openttd.cpp1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/openttd.cpp b/src/openttd.cpp
index 183b8a97c..1ec778dad 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -74,7 +74,6 @@ void ResetMusic();
void CallWindowTickEvent();
bool HandleBootstrap();
-extern void SetDifficultyLevel(int mode, DifficultySettings *gm_opt);
extern Company *DoStartupNewCompany(bool is_ai, CompanyID company = INVALID_COMPANY);
extern void ShowOSErrorBox(const char *buf, bool system);
extern char *_config_file;