diff --git a/map.cpp b/map.cpp
index c02f157154da955117586508a313207e3196305e..9ebcebd7a5cb63cc4287b14afc235a918a8fdecb 100644
--- a/map.cpp
+++ b/map.cpp
@@ -80,7 +80,7 @@ int bioem_RefMap::readRefMaps(bioem_param& param, const char* filemap)
 					read_MRC(indifile,param);
 				}
 				for(int i=0;i<3;i++)mapname[i] = 'X';
-				for(int i=3;i<100;i++)mapname[i] = {0};
+				for(int i=3;i<100;i++)mapname[i] = 0;
 
 			}
 			cout << "\n+++++++++++++++++++++++++++++++++++++++++++ \n";