diff --git a/include/CIndexBuffer.h b/include/CIndexBuffer.h
index e904a9d8..3f3381b6 100644
--- a/include/CIndexBuffer.h
+++ b/include/CIndexBuffer.h
@@ -27,7 +27,7 @@ namespace scene
 			virtual u32 getLast() =0;
 			virtual void setValue(u32 index, u32 value) =0;
 			virtual void set_used(u32 usedNow) =0;
-			virtual void reallocate(u32 new_size) =0;
+			virtual void reallocate(u32 new_size, bool canShrink=true) =0;
 			virtual u32 allocated_size() const =0;
 			virtual void* pointer() =0;
 			virtual video::E_INDEX_TYPE getType() const =0;
@@ -66,9 +66,9 @@ namespace scene
 				Indices.set_used(usedNow);
 			}
 
-			virtual void reallocate(u32 new_size) IRR_OVERRIDE
+			virtual void reallocate(u32 new_size, bool canShrink) IRR_OVERRIDE
 			{
-				Indices.reallocate(new_size);
+				Indices.reallocate(new_size, canShrink);
 			}
 
 			virtual u32 allocated_size() const IRR_OVERRIDE
@@ -180,9 +180,9 @@ namespace scene
 			Indices->set_used(usedNow);
 		}
 
-		virtual void reallocate(u32 new_size) IRR_OVERRIDE
+		virtual void reallocate(u32 new_size, bool canShrink=true) IRR_OVERRIDE
 		{
-			Indices->reallocate(new_size);
+			Indices->reallocate(new_size, canShrink);
 		}
 
 		virtual u32 allocated_size() const IRR_OVERRIDE
diff --git a/include/CVertexBuffer.h b/include/CVertexBuffer.h
index 07674719..f48b07bd 100644
--- a/include/CVertexBuffer.h
+++ b/include/CVertexBuffer.h
@@ -28,7 +28,7 @@ namespace scene
 			virtual video::S3DVertex& operator [](const u32 index) const =0;
 			virtual video::S3DVertex& getLast() =0;
 			virtual void set_used(u32 usedNow) =0;
-			virtual void reallocate(u32 new_size) =0;
+			virtual void reallocate(u32 new_size, bool canShrink=true) =0;
 			virtual u32 allocated_size() const =0;
 			virtual video::S3DVertex* pointer() =0;
 			virtual video::E_VERTEX_TYPE getType() const =0;
@@ -56,8 +56,8 @@ namespace scene
 			virtual void set_used(u32 usedNow) IRR_OVERRIDE
 			{Vertices.set_used(usedNow);}
 
-			virtual void reallocate(u32 new_size) IRR_OVERRIDE
-			{Vertices.reallocate(new_size);}
+			virtual void reallocate(u32 new_size, bool canShrink) IRR_OVERRIDE
+			{Vertices.reallocate(new_size, canShrink);}
 
 			virtual u32 allocated_size() const IRR_OVERRIDE
 			{
@@ -164,9 +164,9 @@ namespace scene
 			Vertices->set_used(usedNow);
 		}
 
-		virtual void reallocate(u32 new_size) IRR_OVERRIDE
+		virtual void reallocate(u32 new_size, bool canShrink=true) IRR_OVERRIDE
 		{
-			Vertices->reallocate(new_size);
+			Vertices->reallocate(new_size, canShrink);
 		}
 
 		virtual u32 allocated_size() const IRR_OVERRIDE
diff --git a/include/IIndexBuffer.h b/include/IIndexBuffer.h
index d1bb961a..b6fb8a12 100644
--- a/include/IIndexBuffer.h
+++ b/include/IIndexBuffer.h
@@ -33,7 +33,7 @@ namespace scene
 		virtual u32 getLast() =0;
 		virtual void setValue(u32 index, u32 value) =0;
 		virtual void set_used(u32 usedNow) =0;
-		virtual void reallocate(u32 new_size) =0;
+		virtual void reallocate(u32 new_size, bool canShrink=true) =0;
 		virtual u32 allocated_size() const=0;
 
 		virtual void* pointer() =0;
diff --git a/include/IVertexBuffer.h b/include/IVertexBuffer.h
index 1a8c6fb8..89767df8 100644
--- a/include/IVertexBuffer.h
+++ b/include/IVertexBuffer.h
@@ -35,7 +35,7 @@ namespace scene
 		virtual video::S3DVertex& operator [](const u32 index) const =0;
 		virtual video::S3DVertex& getLast() =0;
 		virtual void set_used(u32 usedNow) =0;
-		virtual void reallocate(u32 new_size) =0;
+		virtual void reallocate(u32 new_size, bool canShrink=true) =0;
 		virtual u32 allocated_size() const =0;
 
 		//! Same as getData() - not sure why we got 2, should probably deprecate (and we don't always have video::S3DVertex*, so just confusing)