diff --git a/src/com/annimon/everlastingsummer/Parser.java b/src/com/annimon/everlastingsummer/Parser.java
index 7e59739..457712f 100644
--- a/src/com/annimon/everlastingsummer/Parser.java
+++ b/src/com/annimon/everlastingsummer/Parser.java
@@ -92,7 +92,7 @@ public final class Parser {
             return false;
         }
         
-        if (TextUtils.isEmpty(matchWithEffect())) return false;
+        if (!TextUtils.isEmpty(matchWithEffect())) return false;
         
         position++;
         return false;