diff --git a/sys/src/cmd/5l/obj.c b/sys/src/cmd/5l/obj.c
index 55886c7dc..f7096a1d7 100644
--- a/sys/src/cmd/5l/obj.c
+++ b/sys/src/cmd/5l/obj.c
@@ -998,6 +998,11 @@ loop:
 		}
 		goto casedef;
 
+	case AMOVDF:
+		if(!vfp || p->from.type != D_FCONST)
+			goto casedef;
+		p->as = AMOVF;
+		/* fall through */
 	case AMOVF:
 		if(skip)
 			goto casedef;