diff --git a/Outputs/CRT/Internals/ArrayBuilder.cpp b/Outputs/CRT/Internals/ArrayBuilder.cpp
index cffddb04e..6dcef65af 100644
--- a/Outputs/CRT/Internals/ArrayBuilder.cpp
+++ b/Outputs/CRT/Internals/ArrayBuilder.cpp
@@ -125,7 +125,7 @@ std::size_t ArrayBuilder::Buffer::submit(bool is_input) {
 	} else {
 		glBindBuffer(GL_ARRAY_BUFFER, buffer);
 		uint8_t *destination = static_cast<uint8_t *>(glMapBufferRange(GL_ARRAY_BUFFER, 0, (GLsizeiptr)length, GL_MAP_WRITE_BIT | GL_MAP_UNSYNCHRONIZED_BIT | GL_MAP_FLUSH_EXPLICIT_BIT));
-		if(destination) {
+		if(!glGetError() && destination) {
 			std::memcpy(destination, data.data(), length);
 			glFlushMappedBufferRange(GL_ARRAY_BUFFER, 0, (GLsizeiptr)length);
 			glUnmapBuffer(GL_ARRAY_BUFFER);