X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FLaTeXFeatures.cpp;h=1f88eb0f9a857cf5e3e19666684d7174d882f16b;hb=ad132e2e99f851b42e71397e6a32d86dc8eac43d;hp=81bebfdeda7416f63ae6ea4d66fc07a0ec5100de;hpb=537caa8833233f0157ec96d3a6fdc11d50ba537e;p=lyx.git

diff --git a/src/LaTeXFeatures.cpp b/src/LaTeXFeatures.cpp
index 81bebfdeda..1f88eb0f9a 100644
--- a/src/LaTeXFeatures.cpp
+++ b/src/LaTeXFeatures.cpp
@@ -745,7 +745,8 @@ string const LaTeXFeatures::getPackages() const
 		packages << "\\PassOptionsToPackage{normalem}{ulem}\n"
 			    "\\usepackage{ulem}\n";
 
-	if (mustProvide("mhchem"))
+	if (mustProvide("mhchem") &&
+		params_.use_mhchem != BufferParams::package_off)
 		packages << "\\PassOptionsToPackage{version=3}{mhchem}\n"
 			    "\\usepackage{mhchem}\n";