diff -crB avogadro-1.2.0/libavogadro/src/extensions/symmetry/libmsym/src/orbital.c avogadro-1.2.0-fixed/libavogadro/src/extensions/symmetry/libmsym/src/orbital.c
*** avogadro-1.2.0/libavogadro/src/extensions/symmetry/libmsym/src/orbital.c	2016-06-08 11:19:45.000000000 -0300
--- avogadro-1.2.0-fixed/libavogadro/src/extensions/symmetry/libmsym/src/orbital.c	2016-09-13 11:57:50.181291665 -0300
***************
*** 67,79 ****
          }
          case 2 : {
              //o->v = dpolynomial[m+l];
!             char *d = (signbit(m) == 1 ? "-" : "+");
              snprintf(o->name, sizeof(o->name), "%dd%d%s",n,abs(m),d);
              break;
          }
          default : {
              char t = 'f' - 3 + l;
!             char *d = (signbit(m) == 1 ? "-" : "+");
              snprintf(o->name, sizeof(o->name), "%d%c%d%s",n,t,abs(m),d);
          }
      }
--- 67,79 ----
          }
          case 2 : {
              //o->v = dpolynomial[m+l];
!             char *d = (signbit((float) m) == 1 ? "-" : "+");
              snprintf(o->name, sizeof(o->name), "%dd%d%s",n,abs(m),d);
              break;
          }
          default : {
              char t = 'f' - 3 + l;
!             char *d = (signbit((float) m) == 1 ? "-" : "+");
              snprintf(o->name, sizeof(o->name), "%d%c%d%s",n,t,abs(m),d);
          }
      }