diff --git a/libopenjpeg/opj_malloc.h b/libopenjpeg/opj_malloc.h
index f989b87f..9e4af234 100644
--- a/libopenjpeg/opj_malloc.h
+++ b/libopenjpeg/opj_malloc.h
@@ -83,6 +83,8 @@ Allocate memory aligned to a 16 byte boundry
 #else /* Not _WIN32 */
 	#if defined(__sun)
 		#define HAVE_MEMALIGN
+  #elif defined(__FreeBSD__)
+    #define HAVE_POSIX_MEMALIGN
 	/* Linux x86_64 and OSX always align allocations to 16 bytes */
 	#elif !defined(__amd64__) && !defined(__APPLE__) && !defined(_AIX)
 		#define HAVE_MEMALIGN