diff --git a/assets/reader/index.js b/assets/reader/index.js
index 224f929..37df536 100644
--- a/assets/reader/index.js
+++ b/assets/reader/index.js
@@ -677,6 +677,7 @@ class EBookReader {
     // Update Current Word
     let pageWords = await this.getVisibleWordCount();
     this.bookState.currentWord -= pageWords;
+    if (this.bookState.currentWord < 0) this.bookState.currentWord = 0;
 
     // Reset Read Timer
     this.bookState.pageStart = Date.now();