diff --git a/src/lib/project/Project.cpp b/src/lib/project/Project.cpp
index f4f56089..4223c9d9 100644
--- a/src/lib/project/Project.cpp
+++ b/src/lib/project/Project.cpp
@@ -300,11 +300,8 @@ bool Project::requestIndex(bool forceRefresh, bool needsFullRefresh)
 		{
 			if (info.path.exists())
 			{
-				FileInfo newFileInfo = FileSystem::getFileInfoForPath(info.path);
-
-				if (newFileInfo.lastWriteTime > info.lastWriteTime)
+				if (didFileChange(info))
 				{
-					// file has been updated
 					changedFilePaths.insert(info.path);
 				}
 				else
@@ -547,3 +544,26 @@ bool Project::hasCxxSourceGroup() const
 	}
 	return false;
 }
+
+bool Project::didFileChange(const FileInfo& info) const
+{
+	FileInfo diskFileInfo = FileSystem::getFileInfoForPath(info.path);
+	if (diskFileInfo.lastWriteTime > info.lastWriteTime)
+	{
+		std::shared_ptr<TextAccess> storedFileContent = m_storage->getFileContent(info.path);
+		std::shared_ptr<TextAccess> diskFileContent = TextAccess::createFromFile(diskFileInfo.path);
+		if (diskFileContent->getLineCount() == storedFileContent->getLineCount())
+		{
+			for (size_t i = 0; i < diskFileContent->getLineCount(); i++)
+			{
+				if (diskFileContent->getLine(i) != storedFileContent->getLine(i))
+				{
+					return true;
+				}
+			}
+			return false;
+		}
+		return true;
+	}
+	return false;
+}
diff --git a/src/lib/project/Project.h b/src/lib/project/Project.h
index a466cd8d..464e458d 100644
--- a/src/lib/project/Project.h
+++ b/src/lib/project/Project.h
@@ -8,6 +8,7 @@
 
 #include "project/SourceGroup.h"
 
+struct FileInfo;
 class FilePath;
 class PersistentStorage;
 class ProjectSettings;
@@ -50,6 +51,7 @@ private:
 	void buildIndex(const std::set<FilePath>& filesToIndex, const std::set<FilePath>& filesToClean, bool fullRefresh);
 
 	bool hasCxxSourceGroup() const;
+	bool didFileChange(const FileInfo& info) const;
 
 	std::shared_ptr<ProjectSettings> m_settings;
 	StorageAccessProxy* const m_storageAccessProxy;