diff --git a/snappy.cc b/snappy.cc
index 5457377..6fe5f34 100644
--- a/snappy.cc
+++ b/snappy.cc
@@ -1020,7 +1020,7 @@ void MemCopy64(ptrdiff_t dst, const void* src, size_t size) {
 }
 
 SNAPPY_ATTRIBUTE_ALWAYS_INLINE
-size_t AdvanceToNextTagARMOptimized(const uint8_t** ip_p, size_t* tag) {
+inline size_t AdvanceToNextTagARMOptimized(const uint8_t** ip_p, size_t* tag) {
   const uint8_t*& ip = *ip_p;
   // This section is crucial for the throughput of the decompression loop.
   // The latency of an iteration is fundamentally constrained by the
@@ -1043,7 +1043,7 @@ size_t AdvanceToNextTagARMOptimized(const uint8_t** ip_p, size_t* tag) {
 }
 
 SNAPPY_ATTRIBUTE_ALWAYS_INLINE
-size_t AdvanceToNextTagX86Optimized(const uint8_t** ip_p, size_t* tag) {
+inline size_t AdvanceToNextTagX86Optimized(const uint8_t** ip_p, size_t* tag) {
   const uint8_t*& ip = *ip_p;
   // This section is crucial for the throughput of the decompression loop.
   // The latency of an iteration is fundamentally constrained by the