diff --git a/Redcraft.Utility/Source/Public/Containers/Array.h b/Redcraft.Utility/Source/Public/Containers/Array.h
index 24b58d9..13306fe 100644
--- a/Redcraft.Utility/Source/Public/Containers/Array.h
+++ b/Redcraft.Utility/Source/Public/Containers/Array.h
@@ -66,7 +66,7 @@ public:
 	{
 		if constexpr (CForwardIterator<I>)
 		{
-			if (CSizedSentinelFor<S, I>) { checkf(First <= Last, TEXT("Illegal range iterator. Please check First <= Last.")); }
+			if constexpr (CSizedSentinelFor<S, I>) { checkf(First - Last <= 0, TEXT("Illegal range iterator. Please check First <= Last.")); }
 
 			const size_t Count = Iteration::Distance(First, Last);
 
@@ -418,7 +418,7 @@ public:
 
 		if constexpr (CForwardIterator<I>)
 		{
-			if (CSizedSentinelFor<S, I>) { checkf(First <= Last, TEXT("Illegal range iterator. Please check First <= Last.")); }
+			if constexpr (CSizedSentinelFor<S, I>) { checkf(First - Last <= 0, TEXT("Illegal range iterator. Please check First <= Last.")); }
 
 			const size_t InsertIndex = Iter - Begin();
 			const size_t Count = Iteration::Distance(First, Last);
diff --git a/Redcraft.Utility/Source/Public/Containers/Bitset.h b/Redcraft.Utility/Source/Public/Containers/Bitset.h
index a233d57..26dd9a0 100644
--- a/Redcraft.Utility/Source/Public/Containers/Bitset.h
+++ b/Redcraft.Utility/Source/Public/Containers/Bitset.h
@@ -106,7 +106,7 @@ public:
 	{
 		if constexpr (CForwardIterator<I>)
 		{
-			if (CSizedSentinelFor<S, I>) { checkf(First <= Last, TEXT("Illegal range iterator. Please check First <= Last.")); }
+			if constexpr (CSizedSentinelFor<S, I>) { checkf(First - Last <= 0, TEXT("Illegal range iterator. Please check First <= Last.")); }
 
 			const size_t InCount = Iteration::Distance(First, Last);
 
diff --git a/Redcraft.Utility/Source/Public/String/String.h b/Redcraft.Utility/Source/Public/String/String.h
index 7d0007a..2feff1a 100644
--- a/Redcraft.Utility/Source/Public/String/String.h
+++ b/Redcraft.Utility/Source/Public/String/String.h
@@ -471,7 +471,7 @@ public:
 
 		if constexpr (CForwardIterator<I>)
 		{
-			if (CSizedSentinelFor<S, I>) { checkf(First <= Last, TEXT("Illegal range iterator. Please check First <= Last.")); }
+			if constexpr (CSizedSentinelFor<S, I>) { checkf(First - Last <= 0, TEXT("Illegal range iterator. Please check First <= Last.")); }
 
 			const size_t InsertIndex = First - this->Begin();