diff --git a/src/control/GameLogic.cpp b/src/control/GameLogic.cpp
index ed101cad..0ed5d5cf 100644
--- a/src/control/GameLogic.cpp
+++ b/src/control/GameLogic.cpp
@@ -30,7 +30,7 @@ CGameLogic::InitAtStartOfGame()
 void
 CGameLogic::PassTime(uint32 time)
 {
-	uint8 minutes, hours, days;
+	int32 minutes, hours, days;
 
 	minutes = time + CClock::GetMinutes();
 	hours = CClock::GetHours();