diff --git a/examples/test.modal b/examples/test.modal
index a34e4aa..449017b 100644
--- a/examples/test.modal
+++ b/examples/test.modal
@@ -1,4 +1,4 @@
-<> ([b]) ()
-<> (b) ([b])
+<> ([c]) ()
+<> (c) ([c])
 
 (abc)
\ No newline at end of file
diff --git a/src/modal.c b/src/modal.c
index a01e71e..8297ae9 100644
--- a/src/modal.c
+++ b/src/modal.c
@@ -11,7 +11,7 @@ static char bank_a[0x1000], *prog_ = bank_a;
 static char bank_b[0x1000], *outp_ = bank_b;
 static char *regs[0x100];
 
-#define spacer(c) (c == ' ' || c == '(' || c == ')')
+#define spacer(c) (c == ' ' || c == '(' || c == ')' || c == 0)
 
 static char *parse_rulefrag(char *line);
 
@@ -59,7 +59,7 @@ match(char *p, Rule *r)
 				regs[id] = b;
 			a++, b = walk(b), c = *b;
 		}
-		if(!a[0] && spacer(*(b + 1))) return b;
+		if(!*a && spacer(*b)) return b;
 		if(c != *b) return NULL;
 		a++, b++;
 	}