diff --git a/src/gui/widget/textbox.cpp b/src/gui/widget/textbox.cpp
index 0543660db..52222713b 100644
--- a/src/gui/widget/textbox.cpp
+++ b/src/gui/widget/textbox.cpp
@@ -233,7 +233,7 @@ void CTextBox::initFramesRel(void)
 
 	m_cFrameTextRel.iWidth	= m_cFrame.iWidth - m_cFrameScrollRel.iWidth;
 
-	m_nLinesPerPage = (m_cFrameTextRel.iHeight - (2*TEXT_BORDER_WIDTH)) / m_nFontTextHeight;
+	m_nLinesPerPage = std::max(1, (m_cFrameTextRel.iHeight - (2*TEXT_BORDER_WIDTH)) / m_nFontTextHeight);
 
 #if 0
 	TRACE_1("Frames\r\n\tScren:\t%3d,%3d,%3d,%3d\r\n\tMain:\t%3d,%3d,%3d,%3d\r\n\tText:\t%3d,%3d,%3d,%3d \r\n\tScroll:\t%3d,%3d,%3d,%3d \r\n",
@@ -369,7 +369,7 @@ void CTextBox::refreshTextLineArray(void)
 			reSizeMainFrameHeight(m_nNrOfLines * m_nFontTextHeight);
 		}
 
-		m_nLinesPerPage = (m_cFrameTextRel.iHeight - (2*TEXT_BORDER_WIDTH)) / m_nFontTextHeight;
+		m_nLinesPerPage = std::max(1, (m_cFrameTextRel.iHeight - (2*TEXT_BORDER_WIDTH)) / m_nFontTextHeight);
 		m_nNrOfPages =	((m_nNrOfLines-1) / m_nLinesPerPage) + 1;
 
 		if(m_nCurrentPage >= m_nNrOfPages)