diff --git a/po/sv.gmo b/po/sv.gmo
index c19b2b900f..299f6fe172 100644
Binary files a/po/sv.gmo and b/po/sv.gmo differ
diff --git a/po/uk.gmo b/po/uk.gmo
index 7639bcc057..a331875e1c 100644
Binary files a/po/uk.gmo and b/po/uk.gmo differ
diff --git a/src/frontends/qt4/GuiFontMetrics.cpp b/src/frontends/qt4/GuiFontMetrics.cpp
index 2f598f43dc..2ab182ec33 100644
--- a/src/frontends/qt4/GuiFontMetrics.cpp
+++ b/src/frontends/qt4/GuiFontMetrics.cpp
@@ -186,7 +186,8 @@ int GuiFontMetrics::width(docstring const & s) const
 #endif
 	/* For some reason QMetrics::width returns a wrong value with Qt5
 	 * with some arabic text. OTOH, QTextLayout is broken for single
-	 * characters with null width (like \not in mathed).
+	 * characters with null width (like \not in mathed). Also, as a
+	 * safety measure, always use QMetrics::width with our math fonts.
 	*/
 	int w = 0;
 	if (s.length() == 1