diff --git a/include/wine/port.h b/include/wine/port.h
index 28c16238bf3..90c3798fd53 100644
--- a/include/wine/port.h
+++ b/include/wine/port.h
@@ -258,7 +258,7 @@ int usleep (unsigned int useconds);
 #endif /* !defined(HAVE_USLEEP) */
 
 #ifdef __i386__
-extern inline void *memcpy_unaligned( void *dst, const void *src, size_t size )
+static inline void *memcpy_unaligned( void *dst, const void *src, size_t size )
 {
     return memcpy( dst, src, size );
 }
diff --git a/libs/port/memcpy_unaligned.c b/libs/port/memcpy_unaligned.c
index e2a1f629669..62a9ec0d821 100644
--- a/libs/port/memcpy_unaligned.c
+++ b/libs/port/memcpy_unaligned.c
@@ -21,7 +21,9 @@
 #include "config.h"
 #include "wine/port.h"
 
+#ifndef __i386__
 void *memcpy_unaligned( void *dst, const void *src, size_t size )
 {
     return memcpy( dst, src, size );
 }
+#endif