diff --git a/src/render/WaterCannon.cpp b/src/render/WaterCannon.cpp
index 5cc9d0b8..3aaa74be 100644
--- a/src/render/WaterCannon.cpp
+++ b/src/render/WaterCannon.cpp
@@ -127,7 +127,7 @@ void CWaterCannon::Render(void)
 	int16 pointA = m_nCur % NUM_SEGMENTPOINTS;
 	
 	int16 pointB = pointA - 1;
-	if ( (pointA - 1) < 0 )
+	if ( pointB < 0 )
 		pointB += NUM_SEGMENTPOINTS;
 
 	bool bInit = false;