diff --git a/EpubFile/CEpubFile.h b/EpubFile/CEpubFile.h
index d46d8d01e7..2ad4cb341f 100644
--- a/EpubFile/CEpubFile.h
+++ b/EpubFile/CEpubFile.h
@@ -23,7 +23,7 @@ public:
     ~CEpubFile();
 
     void Clear();
-    HRESULT IsEbubFile(const std::wstring& sfileName);
+    HRESULT IsEpubFile(const std::wstring& sfileName);
     void SetTempDirectory(const std::wstring& stempDir);
     HRESULT Convert(const std::wstring& sInputFile, const std::wstring& sOutputFile, const bool& bIsOutCompress = true);
     void ShowMap();
diff --git a/EpubFile/src/CEpubFile.cpp b/EpubFile/src/CEpubFile.cpp
index 619be80c9f..d2ec0606b0 100644
--- a/EpubFile/src/CEpubFile.cpp
+++ b/EpubFile/src/CEpubFile.cpp
@@ -16,7 +16,7 @@ CEpubFile::~CEpubFile()
         NSDirectory::DeleteDirectory(m_sTempDir);
 }
 
-HRESULT CEpubFile::IsEbubFile(const std::wstring &sFileName)
+HRESULT CEpubFile::IsEpubFile(const std::wstring &sFileName)
 {
     const auto& posPoint = sFileName.find_last_of(L'.');
 
diff --git a/EpubFile/test/main.cpp b/EpubFile/test/main.cpp
index 73c593a594..c0b1caee0f 100644
--- a/EpubFile/test/main.cpp
+++ b/EpubFile/test/main.cpp
@@ -20,7 +20,7 @@ int main(int argc, char *argv[])
 
         CEpubFile oEpub;
 
-        if (oEpub.IsEbubFile(sFileName) == S_OK)
+        if (oEpub.IsEpubFile(sFileName) == S_OK)
         {
             std::wstring sFile = NSFile::GetFileName(sFileName);
             sFile = sFile.substr(0, sFile.find_last_of(L'.'));