diff --git a/.gitignore b/.gitignore
index 34e6b1f..7d8b0da 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 bin/
 lib/
+CMakeLists.txt.user
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ed213a2..4f85f53 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@ if(WIN32)
 	set(CMAKE_CXX_FLAGS " /D _VARIADIC_MAX=10")
 else()
 	set(CMAKE_CXX_FLAGS "-std=c++11")
-	set(CMAKE_CXX_FLAGS_DEBUG "-O0")
+	set(CMAKE_CXX_FLAGS_DEBUG "-g -O0")
 	set(CMAKE_CXX_FLAGS_RELEASE "-O2")
 endif()
 
diff --git a/src/ustring.cpp b/src/ustring.cpp
index dc96d7d..7cf54d8 100755
--- a/src/ustring.cpp
+++ b/src/ustring.cpp
@@ -377,11 +377,18 @@ std::size_t ustring::find(char32_t symbol, std::size_t pos /* = 0 */) const
  */
 std::size_t ustring::find(const ustring& str, std::size_t pos /* = 0 */) const
 {
-	if(str.length() > _len)
+    if(str.length() > (_len - pos))
 	{
 		return npos;
 	}
 
+#ifdef __GNUC__
+    char32_t* fpos = reinterpret_cast<char32_t*>(memmem(_pData + pos, (_len - pos)*sizeof(char32_t), str._pData, str._len*sizeof(char32_t)));
+    if(fpos)
+    {
+        return (fpos - _pData);
+    }
+#else
 	const char32_t* pStr = str._pData;
 	const std::size_t len = _len - str.length();
 	for(std::size_t i = pos; i <= len; ++i)
@@ -394,6 +401,7 @@ std::size_t ustring::find(const ustring& str, std::size_t pos /* = 0 */) const
 			}
 		}
 	}
+#endif
 
 	return npos;
 }
@@ -407,7 +415,6 @@ std::size_t ustring::find(const ustring& str, std::size_t pos /* = 0 */) const
 std::size_t ustring::load_from_file( const ustring& fileName, encoding enc ) // TODO: this terrible function needs refactoring
 {
 	std::ifstream file;
-	std::size_t symbolTypeSize = 0;
 
 #ifdef WIN32
 	file.open(fileName.utf16_str(), std::ios::binary);
@@ -420,24 +427,9 @@ std::size_t ustring::load_from_file( const ustring& fileName, encoding enc ) //
 	std::size_t fileLength = static_cast<std::size_t>(file.tellg());
 	file.seekg(0, std::ios::beg);
 
-	switch(enc)
-	{
-	case ustring::UTF8:
-		symbolTypeSize = sizeof(char);
-		break;
-	case ustring::UTF16LE:
-		symbolTypeSize = sizeof(char16_t);
-		break;
-	case ustring::UTF32LE:
-		symbolTypeSize = sizeof(char32_t);
-		break;
-	default:
-		break;
-	}
-
-	char* fileData = new char[fileLength + symbolTypeSize];
+    char* fileData = new char[fileLength + sizeof(char32_t)];
 	file.read(fileData, fileLength);
-	std::memset(fileData + fileLength, 0, symbolTypeSize);
+    std::memset(fileData + fileLength, 0, sizeof(char32_t));
 
 	switch(enc)
 	{
diff --git a/test/main.cpp b/test/main.cpp
index 6ddb15f..7948a91 100755
--- a/test/main.cpp
+++ b/test/main.cpp
@@ -437,7 +437,7 @@ TEST(Ustring, find_symbol)
 
 TEST(Ustring, find_string)
 {
-	ustring str = "Hello World! asdf qwerty asdf";
+    ustring str = "Hello World! asdf qwerty asdf";
 	EXPECT_EQ(13, str.find("asdf"));
 	EXPECT_EQ(25, str.find("asdf", 14));
 }