diff --git a/build.gradle b/build.gradle
index 7c16ad6f..bb12e358 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,6 @@
 // For those who want the bleeding edge
 buildscript {
     repositories {
-        jcenter()
         mavenCentral()
         maven {
             name = "forge"
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 7b643203..f16d2666 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-bin.zip
diff --git a/src/main/java/mcjty/theoneprobe/network/ThrowableIdentity.java b/src/main/java/mcjty/theoneprobe/network/ThrowableIdentity.java
index 05c7c049..73966df1 100644
--- a/src/main/java/mcjty/theoneprobe/network/ThrowableIdentity.java
+++ b/src/main/java/mcjty/theoneprobe/network/ThrowableIdentity.java
@@ -17,7 +17,7 @@ public static void registerThrowable(Throwable e) {
         if (catchedThrowables.containsKey(identity)) {
             long lasttime = catchedThrowables.get(identity);
             if (curtime < lasttime + ConfigSetup.loggingThrowableTimeout) {
-                // If this exception occured less then some time ago we don't report it.
+                // If this exception occurred less then some time ago we don't report it.
                 return;
             }
         }
diff --git a/src/main/java/mcjty/theoneprobe/rendering/OverlayRenderer.java b/src/main/java/mcjty/theoneprobe/rendering/OverlayRenderer.java
index 2d9dddf9..6565c65a 100644
--- a/src/main/java/mcjty/theoneprobe/rendering/OverlayRenderer.java
+++ b/src/main/java/mcjty/theoneprobe/rendering/OverlayRenderer.java
@@ -32,6 +32,8 @@
 import net.minecraft.world.World;
 import org.apache.commons.lang3.tuple.Pair;
 import org.lwjgl.opengl.GL11;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 import javax.annotation.Nullable;
 import java.util.HashMap;
@@ -39,7 +41,7 @@
 import java.util.UUID;
 
 import static mcjty.theoneprobe.api.TextStyleClass.ERROR;
-
+@SideOnly(Side.CLIENT)
 public class OverlayRenderer {
 
     private static Map<Pair<Integer,BlockPos>, Pair<Long, ProbeInfo>> cachedInfo = new HashMap<>();