diff --git a/lib/Epub/Epub/EpubHtmlParserSlim.cpp b/lib/Epub/Epub/EpubHtmlParserSlim.cpp
index a8951da..783384d 100644
--- a/lib/Epub/Epub/EpubHtmlParserSlim.cpp
+++ b/lib/Epub/Epub/EpubHtmlParserSlim.cpp
@@ -188,7 +188,7 @@ bool EpubHtmlParserSlim::parseAndBuildPages() {
   FILE* file = fopen(filepath, "r");
 
   do {
-    void* const buf = XML_GetBuffer(parser, BUFSIZ);
+    void* const buf = XML_GetBuffer(parser, 1024);
     if (!buf) {
       Serial.println("Couldn't allocate memory for buffer");
       XML_ParserFree(parser);
@@ -196,7 +196,7 @@ bool EpubHtmlParserSlim::parseAndBuildPages() {
       return false;
     }
 
-    const size_t len = fread(buf, 1, BUFSIZ, file);
+    const size_t len = fread(buf, 1, 1024, file);
 
     if (ferror(file)) {
       Serial.println("Read error");
diff --git a/lib/Epub/Epub/EpubHtmlParserSlim.h b/lib/Epub/Epub/EpubHtmlParserSlim.h
index d6a7f71..ae42f3e 100644
--- a/lib/Epub/Epub/EpubHtmlParserSlim.h
+++ b/lib/Epub/Epub/EpubHtmlParserSlim.h
@@ -1,6 +1,6 @@
 #pragma once
 
-#include <expat_external.h>
+#include <expat.h>
 #include <limits.h>
 
 #include <functional>
@@ -21,7 +21,7 @@ class EpubHtmlParserSlim {
   int boldUntilDepth = INT_MAX;
   int italicUntilDepth = INT_MAX;
   // If we encounter words longer than this, but this is pretty large
-  char partWordBuffer[PART_WORD_BUFFER_SIZE];
+  char partWordBuffer[PART_WORD_BUFFER_SIZE] = {};
   int partWordBufferIndex = 0;
   TextBlock* currentTextBlock = nullptr;
   Page* currentPage = nullptr;