diff --git a/core/libs/pgfutils/libpgf/PGFplatform.h b/core/libs/pgfutils/libpgf/PGFplatform.h
--- a/core/libs/pgfutils/libpgf/PGFplatform.h
+++ b/core/libs/pgfutils/libpgf/PGFplatform.h
@@ -485,7 +485,9 @@
 #define FSFromStart			SEEK_SET
 #define FSFromCurrent		SEEK_CUR
 #define FSFromEnd			SEEK_END
+#if !(defined(__FreeBSD__) && (__cplusplus >= 201103L))
 #define nullptr				NULL
+#endif
 
 //-------------------------------------------------------------------------------
 // IO Error constants