1 files changed, 2 insertions, 0 deletions
diff --git a/src/PJ_bacon.cpp b/src/PJ_bacon.cpp
index f995e420..b00e1523 100644
--- a/src/PJ_bacon.cpp
+++ b/src/PJ_bacon.cpp
@@ -7,10 +7,12 @@
 #include "projects.h"
 
 
+namespace { // anonymous namespace
 struct pj_opaque {
 	int bacn;
 	int ortl;
 };
+} // anonymous namespace
 
 PROJ_HEAD(apian, "Apian Globular I") "\n\tMisc Sph, no inv";
 PROJ_HEAD(ortel, "Ortelius Oval") "\n\tMisc Sph, no inv";