diff --git a/src/OpenGL/libGLESv2/libGLESv2.cpp b/src/OpenGL/libGLESv2/libGLESv2.cpp
index 4d190c9..b39ff06 100644
--- a/src/OpenGL/libGLESv2/libGLESv2.cpp
+++ b/src/OpenGL/libGLESv2/libGLESv2.cpp
@@ -6245,13 +6245,13 @@
 			return error(GL_INVALID_OPERATION);
 		}
 
-		GLenum sizedInternalFormat = GetSizedInternalFormat(internalformat, type);
-		GLenum validationError = context->getPixels(&data, type, context->getRequiredBufferSize(width, height, depth, sizedInternalFormat, type));
+		GLenum validationError = context->getPixels(&data, type, context->getRequiredBufferSize(width, height, depth, format, type));
 		if(validationError != GL_NONE)
 		{
 			return error(validationError);
 		}
 
+		GLenum sizedInternalFormat = GetSizedInternalFormat(internalformat, type);
 		texture->setImage(context, level, width, height, depth, sizedInternalFormat, format, type, context->getUnpackInfo(), data);
 	}
 }