diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h
index 157b721..61bd259 100644
--- a/src/gallium/auxiliary/util/u_math.h
+++ b/src/gallium/auxiliary/util/u_math.h
@@ -584,7 +584,7 @@ u_bit_scan(unsigned *mask)
    return i;
 }
 
-#ifndef _MSC_VER
+#if !defined(_MSC_VER) && !defined(PIPE_OS_NETBSD)
 static INLINE int
 u_bit_scan64(uint64_t *mask)
 {