diff --git a/src/map.cpp b/src/map.cpp
index f1911d1a7..a6b9d398f 100644
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -761,8 +761,8 @@ void Map::transformLiquids(std::map<v3s16, MapBlock*> &modified_blocks,
 			// set level to last 3 bits, flowing down bit to 4th bit
 			n0.param2 = (flowing_down ? LIQUID_FLOW_DOWN_MASK : 0x00) | (new_node_level & LIQUID_LEVEL_MASK);
 		} else {
-			// set the liquid level and flow bit to 0
-			n0.param2 = ~(LIQUID_LEVEL_MASK | LIQUID_FLOW_DOWN_MASK);
+			// set the liquid level and flow bits to 0
+			n0.param2 &= ~(LIQUID_LEVEL_MASK | LIQUID_FLOW_DOWN_MASK);
 		}
 
 		// change the node.