diff --git a/src/process.h b/src/process.h
index e254c11..d9c9b23 100644
--- a/src/process.h
+++ b/src/process.h
@@ -45,4 +45,4 @@ typedef struct ProcessingData {
 
 
 
-void process(tSyntaxElement*, tProcessingData*);
+bool process(tSyntaxElement*, tProcessingData*);