diff --git a/examples/test.modal b/examples/test.modal
index 7bf0ba0..312e9f4 100644
--- a/examples/test.modal
+++ b/examples/test.modal
@@ -1,4 +1,4 @@
-<> (dup ?x) (?x ?x)
+<> (swap ?x ?y) (?y ?x)
 
-(dup (123))
+(swap 123 456)
 
diff --git a/src/modal.c b/src/modal.c
index 0619992..9f6600a 100644
--- a/src/modal.c
+++ b/src/modal.c
@@ -24,7 +24,8 @@ walk(char *s)
 			--depth;
 			if(!depth) break;
 		}
-		if(depth < 0) break;
+		if(depth == 0 && c == ' ') return s - 1;
+		if(depth < 1 && c == ' ') { return s - 1; }
 	}
 	return s;
 }
@@ -55,6 +56,7 @@ writereg(char r)
 			if(!depth) break;
 		}
 		if(depth < 0) break;
+		if(depth == 0 && c == ' ') break;
 		*outp_++ = c;
 	}
 	return 1;