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-rw-r--r--graph_gui.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/graph_gui.c b/graph_gui.c
index 0562e333a..35ac932d3 100644
--- a/graph_gui.c
+++ b/graph_gui.c
@@ -1016,8 +1016,8 @@ static StringID GetPerformanceTitleFromValue(uint v)
}
static int CDECL _perf_hist_comp(const void *elem1, const void *elem2 ) {
- Player *p1 = *(Player**)elem1;
- Player *p2 = *(Player**)elem2;
+ const Player *p1 = *(const Player* const *)elem1;
+ const Player *p2 = *(const Player* const *)elem2;
int32 v = p2->old_economy[1].performance_history - p1->old_economy[1].performance_history;
return (v!=0) | (v >> (sizeof(int32)*8-1));
}