diff --git a/buffer/build.gradle.kts b/buffer/build.gradle.kts
index 28cb5111..6863d0af 100644
--- a/buffer/build.gradle.kts
+++ b/buffer/build.gradle.kts
@@ -5,6 +5,8 @@ plugins {
 
 dependencies {
     api("io.netty:netty-buffer:${Versions.netty}")
+
+    implementation("com.google.guava:guava:${Versions.guava}")
 }
 
 publishing {
diff --git a/buffer/src/main/java/dev/openrs2/buffer/ByteBufExtensions.kt b/buffer/src/main/java/dev/openrs2/buffer/ByteBufExtensions.kt
index bbc531d4..6a94eaa3 100644
--- a/buffer/src/main/java/dev/openrs2/buffer/ByteBufExtensions.kt
+++ b/buffer/src/main/java/dev/openrs2/buffer/ByteBufExtensions.kt
@@ -1,5 +1,6 @@
 package dev.openrs2.buffer
 
+import com.google.common.base.Preconditions
 import io.netty.buffer.ByteBuf
 import io.netty.buffer.ByteBufUtil
 import java.util.zip.CRC32
@@ -85,9 +86,7 @@ public fun ByteBuf.crc32(): Int {
 }
 
 public fun ByteBuf.crc32(index: Int, len: Int): Int {
-    if (index < 0 || index >= capacity() || len < 0 || (index + len) >= capacity()) {
-        throw IndexOutOfBoundsException()
-    }
+    Preconditions.checkPositionIndexes(index, index + len, capacity())
 
     val crc = CRC32()
     val count = nioBufferCount()