diff --git a/src/lam/util/strncpy.h b/src/lam/util/strncpy.h
index 460ecb3110..f681f9eaf1 100644
--- a/src/lam/util/strncpy.h
+++ b/src/lam/util/strncpy.h
@@ -10,6 +10,9 @@
 /*
  * Use lam_strncpy() instead of strncpy()
  */
+#if defined(strncpy)
+#undef strncpy
+#endif
 #define strncpy lam_strncpy