diff --git a/ConflictSet.cpp b/ConflictSet.cpp
index 6df3c9c..b7a6fc6 100644
--- a/ConflictSet.cpp
+++ b/ConflictSet.cpp
@@ -1850,9 +1850,9 @@ bool scan16(const InternalVersionT *vs, const uint8_t *is, int begin, int end,
 // Returns true if v[i] <= readVersion for all i such that begin <= i < end
 //
 // always_inline So that we can optimize when begin or end is a constant.
-__attribute((always_inline)) bool scan16(const InternalVersionT *vs, int begin,
-                                         int end,
-                                         InternalVersionT readVersion) {
+inline __attribute((always_inline)) bool scan16(const InternalVersionT *vs,
+                                                int begin, int end,
+                                                InternalVersionT readVersion) {
   assert(0 <= begin && begin < 16);
   assert(0 <= end && end <= 16);
   assert(begin <= end);