diff --git a/src/kits/interface/ToolTip.cpp b/src/kits/interface/ToolTip.cpp
index 21db081c99..2885c4732e 100644
--- a/src/kits/interface/ToolTip.cpp
+++ b/src/kits/interface/ToolTip.cpp
@@ -207,6 +207,7 @@ BTextToolTip::SetText(const char* text)
 		return;
 
 	fTextView->SetText(text);
+	fTextView->InvalidateLayout();
 
 	Unlock();
 }