diff --git a/src/main/kotlin/net/axay/kspigot/gui/elements/GUISpaceCompound.kt b/src/main/kotlin/net/axay/kspigot/gui/elements/GUISpaceCompound.kt
index d86b9e97..85365fae 100644
--- a/src/main/kotlin/net/axay/kspigot/gui/elements/GUISpaceCompound.kt
+++ b/src/main/kotlin/net/axay/kspigot/gui/elements/GUISpaceCompound.kt
@@ -69,7 +69,7 @@ abstract class AbstractGUISpaceCompound<T : ForInventory, E> internal constructo
 
     private fun recalculateCurrentContent() {
 
-        if (scrollProgress >= content.size)
+        if (scrollProgress > content.size)
             throw IllegalStateException("The scrollProgress is greater than the content size.")
 
         // avoid IndexOutOfBoundsException