diff --git a/tests/checkasm/Makefile b/tests/checkasm/Makefile
index 5cd92c432c..29b7761c62 100644
--- a/tests/checkasm/Makefile
+++ b/tests/checkasm/Makefile
@@ -8,6 +8,7 @@ AVCODECOBJS-$(CONFIG_FMTCONVERT)        += fmtconvert.o
 AVCODECOBJS-$(CONFIG_H264DSP)           += h264dsp.o
 AVCODECOBJS-$(CONFIG_H264PRED)          += h264pred.o
 AVCODECOBJS-$(CONFIG_H264QPEL)          += h264qpel.o
+AVCODECOBJS-$(CONFIG_LLVIDDSP)          += llviddsp.o
 AVCODECOBJS-$(CONFIG_VP8DSP)            += vp8dsp.o
 AVCODECOBJS-$(CONFIG_VIDEODSP)          += videodsp.o
 
diff --git a/tests/checkasm/checkasm.c b/tests/checkasm/checkasm.c
index 95e2ea30e1..165bb000ee 100644
--- a/tests/checkasm/checkasm.c
+++ b/tests/checkasm/checkasm.c
@@ -101,6 +101,9 @@ static const struct {
     #if CONFIG_JPEG2000_DECODER
         { "jpeg2000dsp", checkasm_check_jpeg2000dsp },
     #endif
+    #if CONFIG_HUFFYUVDSP
+        { "llviddsp", checkasm_check_llviddsp },
+    #endif
     #if CONFIG_PIXBLOCKDSP
         { "pixblockdsp", checkasm_check_pixblockdsp },
     #endif
diff --git a/tests/checkasm/checkasm.h b/tests/checkasm/checkasm.h
index e3dcf2c0dc..18f65e33cf 100644
--- a/tests/checkasm/checkasm.h
+++ b/tests/checkasm/checkasm.h
@@ -44,6 +44,7 @@ void checkasm_check_h264pred(void);
 void checkasm_check_h264qpel(void);
 void checkasm_check_hevc_idct(void);
 void checkasm_check_jpeg2000dsp(void);
+void checkasm_check_llviddsp(void);
 void checkasm_check_pixblockdsp(void);
 void checkasm_check_synth_filter(void);
 void checkasm_check_v210enc(void);
diff --git a/tests/checkasm/llviddsp.c b/tests/checkasm/llviddsp.c
new file mode 100644
index 0000000000..e42873bd20
--- /dev/null
+++ b/tests/checkasm/llviddsp.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2016 Alexandra Hájková
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <string.h>
+
+#include "libavutil/common.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/mem.h"
+
+#include "libavcodec/lossless_videodsp.h"
+
+#include "checkasm.h"
+
+#define randomize_buffers(buf, size)     \
+    do {                                 \
+        int j;                           \
+        for (j = 0; j < size; j++)       \
+            buf[j] = rnd() & 0xFF;       \
+    } while (0)
+
+static void check_add_bytes(LLVidDSPContext c, int width)
+{
+    uint8_t *src0 = av_mallocz(width);
+    uint8_t *src1 = av_mallocz(width);
+    uint8_t *dst0 = av_mallocz(width);
+    uint8_t *dst1 = av_mallocz(width);
+    declare_func_emms(AV_CPU_FLAG_MMX, void, uint8_t *dst, uint8_t *src, int w);
+
+    if (!src0 || !src1 || !dst0 || !dst1)
+        fail();
+
+    randomize_buffers(src0, width);
+    memcpy(src1, src0, width);
+
+    if (check_func(c.add_bytes, "add_bytes")) {
+        call_ref(dst0, src0, width);
+        call_new(dst1, src1, width);
+        if (memcmp(dst0, dst1, width))
+            fail();
+        bench_new(dst1, src1, width);
+    }
+
+    av_free(src0);
+    av_free(src1);
+    av_free(dst0);
+    av_free(dst1);
+}
+
+void checkasm_check_llviddsp(void)
+{
+    LLVidDSPContext c;
+    int width = 16 * av_clip(rnd(), 16, 128);
+
+    ff_llviddsp_init(&c);
+
+    check_add_bytes(c, width);
+
+    report("add_bytes");
+}