2 files changed, 7 insertions, 1 deletions
diff --git a/assemble.c b/assemble.c
index 0397f5df..1d440ead 100644
--- a/assemble.c
+++ b/assemble.c
@@ -325,7 +325,8 @@ int64_t assemble(int32_t segment, int64_t offset, int bits, uint32_t cp,
                                 OUT_RAWDATA, 1, NO_SEG, NO_SEG);
                         }
                     } else if (wsize > 8) {
-                        errfunc(ERR_NONFATAL, "integer supplied to a DT, DO or DY"
+                        errfunc(ERR_NONFATAL,
+				"integer supplied to a DT, DO or DY"
                                 " instruction");
                     } else
                         out(offset, segment, &e->offset,
diff --git a/parser.c b/parser.c
index c513349c..72cb1207 100644
--- a/parser.c
+++ b/parser.c
@@ -401,6 +401,11 @@ restart_parse:
 		    case I_DO:
                         eop->stringlen = 16;
 			break;
+		    case I_DY:
+                        error(ERR_NONFATAL, "floating-point constant"
+                              " encountered in DY instruction");
+			eop->stringlen = 0;
+			break;
 		    default:
                         error(ERR_NONFATAL, "floating-point constant"
                               " encountered in unknown instruction");