diff --git a/backend_mitsu.c b/backend_mitsu.c
index bcc8cfa..7e9c6da 100644
--- a/backend_mitsu.c
+++ b/backend_mitsu.c
@@ -31,6 +31,8 @@ int mitsu_loadlib(struct mitsu_lib *lib, int type)
 {
 	DL_INIT();
 
+	memset(lib, 0, sizeof(*lib));
+
 #if defined(WITH_DYNAMIC)
 	DEBUG("Attempting to load image processing library\n");
 	lib->dl_handle = DL_OPEN(LIB_NAME_RE);
@@ -51,7 +53,6 @@ int mitsu_loadlib(struct mitsu_lib *lib, int type)
 			return CUPS_BACKEND_FAILED;
 		}
 
-		lib->Get3DColorTable = DL_SYM(lib->dl_handle, "CColorConv3D_Get3DColorTable");
 		lib->Load3DColorTable = DL_SYM(lib->dl_handle, "CColorConv3D_Load3DColorTable");
 		lib->Destroy3DColorTable = DL_SYM(lib->dl_handle, "CColorConv3D_Destroy3DColorTable");
 		lib->DoColorConv = DL_SYM(lib->dl_handle, "CColorConv3D_DoColorConv");
@@ -61,7 +62,7 @@ int mitsu_loadlib(struct mitsu_lib *lib, int type)
 		lib->DoImageEffect70 = DL_SYM(lib->dl_handle, "do_image_effect70");
 		lib->DoImageEffect80 = DL_SYM(lib->dl_handle, "do_image_effect80");
 		lib->SendImageData = DL_SYM(lib->dl_handle, "send_image_data");
-		if (!lib->Get3DColorTable || !lib->Load3DColorTable ||
+		if (!lib->Load3DColorTable ||
 		    !lib->Destroy3DColorTable || !lib->DoColorConv ||
 		    !lib->GetCPCData || !lib->DestroyCPCData ||
 		    !lib->DoImageEffect60 || !lib->DoImageEffect70 ||
@@ -133,10 +134,8 @@ int mitsu_apply3dlut(struct mitsu_lib *lib, char *lutfname, uint8_t *databuf,
 			ERROR("Memory allocation failure!\n");
 			return CUPS_BACKEND_RETRY_CURRENT;
 		}
-		if ((i = lib->Get3DColorTable(buf, lutfname))) {
-			ERROR("Unable to open LUT file '%s' (%d)\n", lutfname, i);
-			return CUPS_BACKEND_CANCEL;
-		}
+		if ((i = dyesub_read_file(lutfname, buf, LUT_LEN, NULL)))
+			return i;
 		lib->lut = lib->Load3DColorTable(buf);
 		free(buf);
 		if (!lib->lut) {
diff --git a/backend_mitsu.h b/backend_mitsu.h
index 95e401e..e69383d 100644
--- a/backend_mitsu.h
+++ b/backend_mitsu.h
@@ -61,7 +61,6 @@ typedef int (*send_image_dataFN)(struct BandImage *out, void *context,
 struct mitsu_lib {
 	void *dl_handle;
 	lib70x_getapiversionFN GetAPIVersion;
-	Get3DColorTableFN Get3DColorTable;
 	Load3DColorTableFN Load3DColorTable;
 	Destroy3DColorTableFN Destroy3DColorTable;
 	DoColorConvFN DoColorConv;
diff --git a/backend_mitsu70x.c b/backend_mitsu70x.c
index a0450fe..52476cc 100644
--- a/backend_mitsu70x.c
+++ b/backend_mitsu70x.c
@@ -1157,7 +1157,7 @@ repeat:
 	/* Run through basic LUT, if present and enabled */
 	if (job->lutfname) {
 		int ret = mitsu_apply3dlut(&ctx->lib, job->lutfname,
-				       job->databuf, job->cols,
+				       job->spoolbuf, job->cols,
 				       job->rows, job->cols * 3,
 				       COLORCONV_BGR);
 		if (ret) {