diff --git a/idxcr.c b/idxcr.c
index 0591915..066e2ec 100644
--- a/idxcr.c
+++ b/idxcr.c
@@ -38,6 +38,11 @@
 #include "vp4c.h"
 #include "bitpack.h"
 #include "idx.h"
+
+#ifdef NSIMD
+#define bitpack128v32 bitpack32
+#endif
+
 //---------------------------------------------------------------------------------------------------------------
 #define DELTA( __in, __n, __b) do { unsigned _v; for(__b=0,_v = __n-1; _v >   0; --_v) __in[_v] = (__in[_v] - __in[_v-1]) - 1, __b |= __in[_v]; __b = bsr32(__b); } while(0)