diff --git a/src/main/java/com/glodblock/github/common/tile/TileCertusQuartzTank.java b/src/main/java/com/glodblock/github/common/tile/TileCertusQuartzTank.java
index 2cc37b5ac..e36e820bb 100644
--- a/src/main/java/com/glodblock/github/common/tile/TileCertusQuartzTank.java
+++ b/src/main/java/com/glodblock/github/common/tile/TileCertusQuartzTank.java
@@ -73,7 +73,7 @@ public FluidStack drain(Fluid fluid, int amount, boolean doDrain, boolean findMa
         FluidStack drainedFluid = this.tank.drain(amount, doDrain);
         int drained = drainedFluid != null ? drainedFluid.amount : 0;
 
-        if (drained > 0) {
+        if (doDrain && drained > 0) {
             update();
         }
 
@@ -131,7 +131,7 @@ public int fill(FluidStack fluid, boolean doFill, boolean findMainTank) {
 
         int filled = this.tank.fill(fluid, doFill);
 
-        if (filled > 0) {
+        if (doFill && filled > 0) {
             update();
         }