diff --git a/src/voxel.cpp b/src/voxel.cpp
index 7ba4e21c6..c045c949c 100644
--- a/src/voxel.cpp
+++ b/src/voxel.cpp
@@ -264,6 +264,7 @@ void VoxelManipulator::clearFlag(u8 flags)
 			<<volume<<" nodes"<<std::endl;*/
 }
 
+#if 0
 int VoxelManipulator::getWaterPressure(v3s16 p, s16 &highest_y, int recur_count)
 {
 	m_flags[m_area.index(p)] |= VOXELFLAG_CHECKED2;
@@ -894,6 +895,6 @@ void VoxelManipulator::flowWater(
 			<<", updateareawaterpressure_time: "<<updateareawaterpressure_time
 			<<std::endl;*/
 }
-
+#endif
 
 //END
diff --git a/src/voxel.h b/src/voxel.h
index ed7fba089..c377dfe7a 100644
--- a/src/voxel.h
+++ b/src/voxel.h
@@ -396,7 +396,8 @@ public:
 	*/
 
 	void clearFlag(u8 flag);
-	
+
+#if 0
 	// VOXELFLAG_CHECKED2s must usually be cleared before calling
 	// -1: dead end, 0-255: pressure
 	// highest_y: Highest found water y is stored here.
@@ -450,6 +451,7 @@ public:
 			bool debugprint=false,
 			u32 timelimit=50
 	);
+#endif
 
 	/*
 		Virtual functions