diff --git a/src/raygui.h b/src/raygui.h
index 3084bd6..71bbd82 100644
--- a/src/raygui.h
+++ b/src/raygui.h
@@ -1398,7 +1398,7 @@ void GuiGroupBox(Rectangle bounds, const char *text)
     GuiDrawRectangle(RAYGUI_CLITERAL(Rectangle){ bounds.x, bounds.y + bounds.height - 1, bounds.width, RAYGUI_GROUPBOX_LINE_THICK }, 0, BLANK, Fade(GetColor(GuiGetStyle(DEFAULT, (state == GUI_STATE_DISABLED)? BORDER_COLOR_DISABLED : LINE_COLOR)), guiAlpha));
     GuiDrawRectangle(RAYGUI_CLITERAL(Rectangle){ bounds.x + bounds.width - 1, bounds.y, RAYGUI_GROUPBOX_LINE_THICK, bounds.height }, 0, BLANK, Fade(GetColor(GuiGetStyle(DEFAULT, (state == GUI_STATE_DISABLED)? BORDER_COLOR_DISABLED : LINE_COLOR)), guiAlpha));
 
-    GuiLine(RAYGUI_CLITERAL(Rectangle){ bounds.x, bounds.y, bounds.width, 1 }, text);
+    GuiLine(RAYGUI_CLITERAL(Rectangle){ bounds.x, bounds.y, bounds.width, 0 }, text);
     //--------------------------------------------------------------------
 }