diff --git a/TextEditor.h b/TextEditor.h
index 19ad61bd..1fd00e03 100644
--- a/TextEditor.h
+++ b/TextEditor.h
@@ -43,7 +43,7 @@ class IMGUI_API TextEditor
 	inline bool IsShowLineNumbersEnabled() const { return mShowLineNumbers; }
 	inline void SetShortTabsEnabled(bool aValue) { mShortTabs = aValue; }
 	inline bool IsShortTabsEnabled() const { return mShortTabs; }
-	inline int GetLineCount() const { return mLines.size(); }
+	inline size_t GetLineCount() const { return mLines.size(); }
 	void SetPalette(PaletteId aValue);
 	PaletteId GetPalette() const { return mPaletteId; }
 	void SetLanguageDefinition(LanguageDefinitionId aValue);