diff --git a/plugins/GSdx/GSDevice11.cpp b/plugins/GSdx/GSDevice11.cpp
index c51cdc2ace..58190b357a 100644
--- a/plugins/GSdx/GSDevice11.cpp
+++ b/plugins/GSdx/GSDevice11.cpp
@@ -518,6 +518,12 @@ GSTexture* GSDevice11::CopyOffscreen(GSTexture* src, const GSVector4& sr, int w,
 
 void GSDevice11::CopyRect(GSTexture* st, GSTexture* dt, const GSVector4i& r)
 {
+	if(!st || !dt)
+	{
+		ASSERT(0);
+		return;
+	}
+
 	D3D11_BOX box = {r.left, r.top, 0, r.right, r.bottom, 1};
 
 	m_ctx->CopySubresourceRegion(*(GSTexture11*)dt, 0, 0, 0, 0, *(GSTexture11*)st, 0, &box);
@@ -535,6 +541,12 @@ void GSDevice11::StretchRect(GSTexture* st, const GSVector4& sr, GSTexture* dt,
 
 void GSDevice11::StretchRect(GSTexture* st, const GSVector4& sr, GSTexture* dt, const GSVector4& dr, ID3D11PixelShader* ps, ID3D11Buffer* ps_cb, ID3D11BlendState* bs, bool linear)
 {
+	if(!st || !dt)
+	{
+		ASSERT(0);
+		return;
+	}
+
 	BeginScene();
 
 	GSVector2i ds = dt->GetSize();
diff --git a/plugins/GSdx/GSDevice9.cpp b/plugins/GSdx/GSDevice9.cpp
index e5dda141ea..855df86537 100644
--- a/plugins/GSdx/GSDevice9.cpp
+++ b/plugins/GSdx/GSDevice9.cpp
@@ -701,6 +701,12 @@ GSTexture* GSDevice9::CopyOffscreen(GSTexture* src, const GSVector4& sr, int w,
 
 void GSDevice9::CopyRect(GSTexture* st, GSTexture* dt, const GSVector4i& r)
 {
+	if(!st || !dt)
+	{
+		ASSERT(0);
+		return;
+	}
+
 	m_dev->StretchRect(*(GSTexture9*)st, r, *(GSTexture9*)dt, r, D3DTEXF_NONE);
 }
 
@@ -716,6 +722,12 @@ void GSDevice9::StretchRect(GSTexture* st, const GSVector4& sr, GSTexture* dt, c
 
 void GSDevice9::StretchRect(GSTexture* st, const GSVector4& sr, GSTexture* dt, const GSVector4& dr, IDirect3DPixelShader9* ps, const float* ps_cb, int ps_cb_len, Direct3DBlendState9* bs, bool linear)
 {
+	if(!st || !dt)
+	{
+		ASSERT(0);
+		return;
+	}
+
 	BeginScene();
 
 	GSVector2i ds = dt->GetSize();
diff --git a/plugins/GSdx/GSRendererHW.h b/plugins/GSdx/GSRendererHW.h
index d6ef16cb18..a78cf8f50e 100644
--- a/plugins/GSdx/GSRendererHW.h
+++ b/plugins/GSdx/GSRendererHW.h
@@ -756,6 +756,12 @@ protected:
 		
 		GSTextureCache::Target* ds = m_tc->LookupTarget(TEX0, m_width, m_height, GSTextureCache::DepthStencil, m_context->DepthWrite());
 
+		if(!rt || !ds)
+		{
+			ASSERT(0);
+			return;
+		}
+
 		GSTextureCache::Source* tex = NULL;
 
 		if(PRIM->TME)
diff --git a/plugins/GSdx/GSTextureCache.cpp b/plugins/GSdx/GSTextureCache.cpp
index 88a0e8a7c3..0fbbfa4923 100644
--- a/plugins/GSdx/GSTextureCache.cpp
+++ b/plugins/GSdx/GSTextureCache.cpp
@@ -736,7 +736,10 @@ GSTextureCache::Source* GSTextureCache::CreateSource(const GIFRegTEX0& TEX0, con
 			src->m_texture = dt;
 		}
 
-		src->m_texture->SetScale(scale);
+		if( src->m_texture )
+			src->m_texture->SetScale(scale);
+		else
+			ASSERT(0);
 
 		switch(TEX0.PSM)
 		{