1 files changed, 1 insertions, 1 deletions

diff --git a/source/WaterSimulator.cpp b/source/WaterSimulator.cpp
index 48389ccd4..66acaea6a 100644
--- a/source/WaterSimulator.cpp
+++ b/source/WaterSimulator.cpp
@@ -15,7 +15,7 @@ cWaterSimulator::cWaterSimulator(cWorld *a_World)
 }
 
 
-bool cWaterSimulator::IsAllowedBlock(char a_BlockID)
+bool cWaterSimulator::IsAllowedBlock(BLOCKTYPE a_BlockID)
 {
 	return IsBlockWater(a_BlockID);
 }