diff --git a/src/frontend/inpcom.c b/src/frontend/inpcom.c
index caff38ce9..abcbd0e61 100644
--- a/src/frontend/inpcom.c
+++ b/src/frontend/inpcom.c
@@ -2389,6 +2389,7 @@ inp_determine_libraries(struct line *deck, char *lib_name)
                             /* see if other libraries referenced */
                             inp_determine_libraries(libraries[i], y);
                         }
+                        break;
                     }
                 *line = '*';  /* comment out .lib line */
                 *t = keep_char1;