diff --git a/libavcodec/rv34.c b/libavcodec/rv34.c
index d251c6817c..09fa962b2f 100644
--- a/libavcodec/rv34.c
+++ b/libavcodec/rv34.c
@@ -24,6 +24,7 @@
  * RV30/40 decoder common data
  */
 
+#include "libavutil/avassert.h"
 #include "libavutil/imgutils.h"
 #include "libavutil/internal.h"
 
@@ -339,8 +340,9 @@ static inline RV34VLC* choose_vlc_set(int quant, int mod, int type)
 {
     if(mod == 2 && quant < 19) quant += 10;
     else if(mod && quant < 26) quant += 5;
-    return type ? &inter_vlcs[rv34_quant_to_vlc_set[1][av_clip(quant, 0, 30)]]
-                : &intra_vlcs[rv34_quant_to_vlc_set[0][av_clip(quant, 0, 30)]];
+    av_assert2(quant >= 0 && quant < 32);
+    return type ? &inter_vlcs[rv34_quant_to_vlc_set[1][quant]]
+                : &intra_vlcs[rv34_quant_to_vlc_set[0][quant]];
 }
 
 /**
diff --git a/libavcodec/rv34data.h b/libavcodec/rv34data.h
index 4b2701fee6..32ecc395a8 100644
--- a/libavcodec/rv34data.h
+++ b/libavcodec/rv34data.h
@@ -90,13 +90,13 @@ static const uint16_t rv34_qscale_tab[32] = {
 
 /**
  * tables used to translate a quantizer value into a VLC set for decoding
- * The first table is used for intraframes.
+ * The first table is used for intraframes. The two last entries are invalid.
  */
-static const uint8_t rv34_quant_to_vlc_set[2][31] = {
+static const uint8_t rv34_quant_to_vlc_set[2][32] = {
  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1,
-   2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 0 },
+   2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 0, 0 },
  { 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3,
-   3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6 },
+   3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 6 },
 };
 
 /**